Musannaf Ibn Abi Shaybah

Hazrat Mughira narrates that Hajjaj used to instruct people to distribute grain, saying that whoever wants to take two jarb of wheat in exchange for four jarb of barley, give it to him. I asked Ibrahim and Hazrat Shabi about this, and they said there is no harm in it.

Hazrat Jabir states that when there is a difference between two types, there is no harm in giving with an excess at the same time.

Hazrat Ibn Umar (may Allah be pleased with them both) says that there is no harm if, when the colors of two things are different, two carpets are given in exchange for one at the same time; there is no harm in this.

Hazrat Abu Qalabah says that when the types are different, you may sell them as you wish.

Hazrat Zuhri did not see any harm in selling wheat in exchange for barley with immediate payment, even if one of the two was less and the other more.

Hazrat Ubadah bin Samit (may Allah be pleased with him) narrates that exchanging wheat for barley with immediate payment, even if the barley is more, is permissible; however, it is not permissible if it is on credit.

Hazrat Anis bin Khalid says that I asked Hazrat Ata about the sale of barley in exchange for wheat, whether two can be given for one or not, if it is with immediate payment. He replied that there is no harm in it.

It is narrated from Hazrat Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: There is no harm in exchanging wheat for wheat, barley for barley, with immediate payment, in equal measure and equal weight; whoever gives more has engaged in usury. However, if the colors of the items differ, then there is no harm in any increase or decrease.

It is narrated from Hazrat Ubadah bin Samit (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: Gold for gold, silver for silver, wheat for wheat, barley for barley must be exchanged equally and with immediate payment. When their types differ, then you may sell as you wish, provided that the payment is immediate.