Wheat for barley, two for one

Mughirah says: Al-Hajjaj used to give the people their provisions, and the people of the provisions house would say: Whoever wishes may take four jaribs of barley in exchange for the two jaribs of wheat due to him. We asked Ibrahim and al-Sha'bi about this, and they said: There is no harm in it.

Sayyiduna Jabir (may Allah be pleased with him) says that when the two kinds differ, there is no harm in giving more of one for the other, provided it is exchanged on the spot.

Sayyiduna Ibn Umar (may Allah be pleased with them both) saw no harm, in things sold by measure, when their colours differ, in exchanging one for two on the spot.

Abu Qilabah says that when the kinds differ, you may sell however you wish.

Al-Zuhri saw no harm in selling wheat for barley with immediate payment, with one of the two being less and the other more.

Sayyiduna Ubadah bin al-Samit (may Allah be pleased with him) says that giving wheat for barley with immediate payment, while the barley is the greater quantity, is valid; but it is not valid on credit.

Anis bin Khalid says: I asked Ata about selling barley for wheat: May two be given for one, when it is with immediate payment? He said: There is no harm in it.

It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "There is no harm in giving wheat for wheat and barley for barley with immediate payment, in equal measure and equal weight. Whoever gives more or asks for more has dealt in usury (riba), except for those things whose colours differ: there is no harm in more or less in them."

It is narrated from Sayyiduna Ubadah bin al-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 and barley for barley must be given in equal amounts and with immediate payment. When these categories differ, you may sell however you wish, but their immediate payment is necessary."