The buyer and seller have the option as long as they have not separated, except in a sale with an option

Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) says that the Messenger of Allah (peace and blessings be upon him) said: "The seller and the buyer each have the option to cancel the deal until they part, except when the sale between them is one with an option."
(b) In the narration of al-Shafi'i it says: "He has the option over his companion."

Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) says that the Messenger of Allah (peace and blessings be upon him) said: "The buyer and the seller have the option to cancel the deal before they separate from one another, or else the sale between them is one with an option." When Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) made a sale and wanted the sale to become binding, he would walk a little and then come back.

Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrates from the Messenger of Allah (peace and blessings be upon him) that he (peace and blessings be upon him) said: "The buyer and the seller have the option to cancel the deal before they separate from one another, or else the sale between them is one with an option." Nafi' (may Allah have mercy on him) says that when Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) bought something from someone and wanted to make the sale binding, he would part from his companion.

Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrates from the Messenger of Allah (peace and blessings be upon him) that he (peace and blessings be upon him) said: "When two men make a sale, each of them has the option to cancel the deal as long as they have not separated, or if they have given each other the option and made the sale on that basis, then the sale is binding. If they separate after making the sale and neither of them has abandoned the sale, the sale is likewise binding."

Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrates that the Prophet (peace and blessings be upon him) said: "The buyer and the seller have the option to cancel the deal before they separate, or (until) one of them says to the other: 'Choose.'" And sometimes he said: "or there is an option."
(b) In the narration of al-Adib, the Messenger of Allah (peace and blessings be upon him) said: "The buyer and the seller have the option to cancel the deal before they separate, except when the sale between them is one with an option, or he says to his companion: 'Choose.'"

Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) says that the Messenger of Allah (peace and blessings be upon him) said: "The sale between the buyer and the seller is not complete until they separate, except a sale with an option."

Hakim bin Hizam (may Allah be pleased with him) says that the Messenger of Allah (peace and blessings be upon him) said: "The buyer and the seller have the option to cancel the deal as long as they have not separated. If both are truthful and make things clear, their sale will be blessed for them; if both lie and conceal, the blessing will be wiped out of their sale."

Sayyiduna Hakim bin Hizam (may Allah be pleased with him) says that the Messenger of Allah (peace and blessings be upon him) said: "The buyer and the seller have the option to cancel the deal as long as they have not separated." Hammam says: I found in my book that they give the option three times. "If both of them speak the truth and make things clear, their trade will be blessed; if they lie and conceal, it may be that they make a profit, but the blessing will be wiped out."

Abu al-Wadi' says: We camped at a place during one of our military expeditions, and a companion of ours sold a horse in exchange for a slave. (Then the two of them stayed for the rest of that day and the night.) When morning came and it was time to set off, he got up to saddle his horse and regretted (the sale). He came to the man and asked to undo the sale, but he refused to undo it and said: "Sayyiduna Abu Barzah (may Allah be pleased with him), the Companion of the Messenger of Allah (peace and blessings be upon him), will judge between me and you." They came to Sayyiduna Abu Barzah al-Aslami (may Allah be pleased with him) in a corner of the army camp. They related the story, and Sayyiduna Abu Barzah (may Allah be pleased with him) said: "Are you both content that I judge between you with the judgement of the Messenger of Allah (peace and blessings be upon him)?" He (peace and blessings be upon him) had said: "The buyer and the seller have the option to cancel the deal as long as they have not separated."
(b) Hisham bin Hassan says that Jamil related that he said: I do not think that you two have separated.

Sayyiduna Abu Barzah al-Aslami (may Allah be pleased with him) says that the Messenger of Allah (peace and blessings be upon him) said: "The buyer and the seller both have the option to cancel the deal as long as they have not separated."

Sayyiduna Abdullah bin Umar and Sayyiduna Abdullah bin Abbas (may Allah be pleased with them) both narrate from the Messenger of Allah (peace and blessings be upon him): "Whoever buys goods and the sale becomes due to him has the option as long as his companion has not parted from him; if he wishes he may take it. But if he parts from him, then he has no option."

Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) narrates that the Prophet (peace and blessings be upon him) made a sale with a man; when he had concluded the sale with him, he said: You have the option. Then the Messenger of Allah (peace and blessings be upon him) said: "This is how a sale is."

Sayyiduna Jabir (may Allah be pleased with him) said that the Prophet (peace and blessings be upon him) bought something from a Bedouin — (I think it was Abu al-Zubayr who) said he was from Banu Amir bin Sa'sa'ah — he bought a load of leaves. When the sale became binding, the Prophet (peace and blessings be upon him) said: "You have the option." The Bedouin said: I have never seen a buyer who was also more understanding than you. From which tribe are you? He (peace and blessings be upon him) said: "From Quraysh."

Sayyiduna Jabir (may Allah be pleased with him) said that the Prophet (peace and blessings be upon him) bought a load of fodder leaves from a Bedouin. When the sale became binding, the Prophet (peace and blessings be upon him) said to him: "You have the option." The Bedouin said: May Allah prolong your life, what a fine trader you are!

Abdullah bin Tawus (may Allah have mercy on him) narrates from his father that he said: The Messenger of Allah (peace and blessings be upon him) gave a man the option after the sale. The man said to him: May Allah prolong your life, from which people are you? The Messenger of Allah (peace and blessings be upon him) said: "A man from Quraysh." He (Ibn Tawus) said: My father used to swear that the option is only after the sale.

Abdullah bin Tawus (may Allah have mercy on him) narrates from his father that before prophethood the Prophet (peace and blessings be upon him) bought a camel or something else from a Bedouin. When the sale became binding, he (peace and blessings be upon him) said: "You have the option." The Bedouin looked at him (peace and blessings be upon him) and said: "May Allah prolong your life, who are you?" He said: When Islam came, the Prophet (peace and blessings be upon him) placed the option after the sale.

Yahya bin Ayyub said: When Abu Zur'ah made a sale with a man, he would give him the option, then he would say: Give me the option as well. And he would say: I heard Abu Hurayrah (may Allah be pleased with him) say that the Messenger of Allah (peace and blessings be upon him) said: "Two parties to a sale must not part from each other except with mutual consent."

Sayyiduna Anas (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings be upon him) passed by the people of al-Baqi' and said: "O people of al-Baqi'!" They raised their heads (to listen), and he (peace and blessings be upon him) said: "O people of al-Baqi'! Two parties to a sale must not part without mutual consent."

Sayyiduna Samurah (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "The buyer and the seller have the option to cancel the deal as long as they have not separated, and whichever of the two is pleased with the sale may take it."

Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) said: I heard the Messenger of Allah (peace and blessings be upon him) say: "Whoever buys goods from someone, both of them have the option until they separate from their place, unless it is a sale with an option between them; and it is not lawful for anyone to part from his companion for fear that the sale will be cancelled." Cancelling the sale has been expressed by the word iqalah.
(b) Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) said: I sold to Sayyiduna Uthman (may Allah be pleased with him) property in the valley in exchange for his property at Khaybar. When we had concluded the sale, I turned back on my heels until I left his house, fearing that he might revoke the sale; and the practice was that as long as the buyer and the seller had not separated, they had the option to cancel the deal. Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) said: When the sale between him and me was completed, I saw that I had (in a way) outwitted him, in that I had moved him three nights' journey towards the land of Thamud, while he had brought me three nights' journey closer to the land of Madinah.

Likewise (through another chain).

Sayyiduna Jarir (may Allah be pleased with him) said: I pledged allegiance to the Messenger of Allah (peace and blessings be upon him) on hearing, obeying, and sincere goodwill towards every Muslim. Whenever Jarir (may Allah be pleased with him) made a sale with someone, he would say: What we have taken from you is dearer to us than what we have given you; you have the option. His intention by this was to complete the sale.

Yunus (may Allah have mercy on him) also mentioned something similar, but he did not mention the words "By this he meant the completion of his transaction."

Abdullah bin al-Mubarak (may Allah have mercy on him) said: The hadith "The two parties to a sale have the option" — that is, the two who transact have the option as long as they have not separated — is more firmly established than these pillars.
(b) Ali bin al-Madini (may Allah have mercy on him) said about Sufyan bin Uyaynah (may Allah have mercy on him) that he narrated to the people of Kufah the hadith of Ibn Umar (may Allah be pleased with them both) from the Prophet (peace and blessings be upon him): "The two parties to a sale have the option as long as they have not separated." They narrated it to Abu Hanifah, and Abu Hanifah said: This is nothing; what if the two of them were in a ship? Ali bin al-Madini said: Allah will question him about what he said.