It is narrated from Ibn Umar (may Allah be pleased with them both) that the Messenger of Allah (ﷺ) said: "Whoever buys grain should not sell it until he has taken full possession of it."
Hadith Referenceمسند الإمام الشافعي / كتاب البيوع / 1397
Hadith Takhrijاخرجه البخارى البيوع، باب الكيل على البائع والمعطى (2126) ومسلم ، البيوع، باب بطلان بيع المبيع قبل القبص (1526)۔
It is narrated from Ibn Umar (may Allah be pleased with them both) that the Prophet (ﷺ) said: "Whoever buys grain should not sell it until he has taken full possession of it."
Hadith Referenceمسند الإمام الشافعي / كتاب البيوع / 1398
Hadith Takhrijاخرجه البخاري، البيوع، باب ما يذكر في بيع الطعام والحكرة (2133) ومسلم، البيوع، باب بطلان بيع المبيع قبل القبض (1526)۔
Ibn Abbas (may Allah be pleased with him) narrated that the Messenger of Allah (ﷺ) forbade selling grain until it is possessed. And Ibn Abbas (may Allah be pleased with him) said, in his own opinion, I think this rule applies to everything.
Hadith Referenceمسند الإمام الشافعي / كتاب البيوع / 1399
Hadith Takhrijاخرجه البخاري، البيوع، باب ما يذكر في بيع الطعام والحكرة (2132)، (2135) ومسلم، البيوع، باب بطلان بيع المبيع قبل القبص (1525)۔
Hakim bin Hizam (may Allah be pleased with him) narrated that the Messenger of Allah (ﷺ) forbade me from selling that which is not in my possession.
Hadith Referenceمسند الإمام الشافعي / كتاب البيوع / 1400
Hadith Takhrijاخرجه الترمذى البيوع، باب ماجاء في كراهية بيع ما ليس عنده (1232)، (1233)، (1235) وقال حسن وابوداؤد ،البيوع، باب فى الرجل يبيع ما ليس عنده (3503) وابن ماجة ، التجارات ، باب النهي عن بيع ما ليس عند وعن ربح ما لم يضمن (2187) - وصححه ابن الجارود (602)۔
Hakim bin Hizam (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "Did I not find out (or has it not reached me) that you sell grain?" Hakim (may Allah be pleased with him) said, "Yes, O Messenger of Allah." Then the Messenger of Allah (peace and blessings be upon him) said: "Do not sell the grain at all until you have bought it and become its owner."
Hadith Referenceمسند الإمام الشافعي / كتاب البيوع / 1401
Hadith Takhrijصحيح: اخرجه النسائي البيوع، باب بيع الطعام قبل أن يستوفى 4605 - واحمد: (403/3)۔
It is narrated from Ibn Abbas (may Allah be pleased with them) that he said: What the Messenger of Allah (peace be upon him) forbade is the sale of grain which is not taken into possession. Ibn Abbas (may Allah be pleased with them) said from his own opinion, I consider this rule to apply to everything.
Hadith Referenceمسند الإمام الشافعي / كتاب البيوع / 1403