“The Prophet used to give us dates from the collection (mixed) [1] dates, and we would exchange them for dates that were better, and we add to the price. [2] The Messenger of Allah said: ‘It is not right to give one Sa of dates for two Sa, nor one Dirham for two Dirham. A Dirham for a Dirham and a Dinar for a Dinar is allowed: the only difference between them is in weight (i.e., the weight must be equal.)’” Sahih

"I heard Abu Saeed Al-Khudri say: 'A Dirham for a Dirham and a Dinar for a Dinar.' So I said: 'I heard Ibn 'Abbas say something other than that.' He said: 'But I met Ibn 'Abbas and said: "Tell me about what you say concerning exchange is it something that you heard from the Messenger of Allah (ﷺ) or something that You found in the Book of Allah?" He said: "I did not find it in the Book of Allah, and I did not hear it from the Messenger of Allah; rather Usamah bin Zaid told me that the Messenger of Allah (ﷺ) said: "Usury is only in credit."[1]

"I heard him meaning Ibn 'Abbas allowing exchange (of Dirhams for Dirham etc., if extra was given) and that was narrated from him. Then I heard that he has taken back this opinion. I met him in Makkah and said: 'I heard that you had taken back (your opinion).' He said: 'Yes. That was just my own opinion, but Abu Sa'eed narrated from the Messenger of Allah (ﷺ) that he forbade exchange (of like items if extra is given)."'

"I heard 'Umar say: "The Messenger of Allah (ﷺ), said: 'Gold for silver is usury, unless it is exchanged on the spot."' (Sahih) Abu Bakr bin Abu-Shaibah said: "I heard sufyan saying: 'Gold for silver." memorize (this).

"I came saying. 'Who will exchange Dirham?' Talhah bin 'Ubaidullah, who was with 'Umar bin Khattab, said: 'Show us your gold, then come to us; when our treasure comes, we will give you your silver.' 'Umar said: 'No, by Allah, you will give him silver (now), or give him back his gold, for the Messenger of Allah (ﷺ) said: "Silver for gold is usury, unless it is exchanged on the spot."'

'The Messenger of Allah (ﷺ) said: 'Dinar for Dinar, Dirham for Dirham, with no increase between them. Whoever has need of silver, let him trade gold for it, and whoever has need of gold, let him trade silver for it, and let the transaction be done on the spot."'

"I used to sell camels, and I used to buy gold for silver and silver for gold, Dinar for Dirham and Dirham for Dinar. I asked the Prophet (ﷺ) about that, and he said: 'If you take one of them and give the other, then you and your companion should not separate until everything is clear (i.e., the exchange is completed).’” (Hasan) Another chain with similar wording.

"The Messenger of Allah (ﷺ) forbade breaking the coins of the Muslims that are in circulation among them, without any necessary reason.”(1)

Zaid, Abu 'Ayyash, the freed slave of Bani Zuhrah, told him that he asked Sa'd bin Abu Waqqas about buying wheat with barley. Sa'd said to him: "Which of them is better?" He said: "Wheat." He told him not to do that and said: "I heard the Messenger of Allah (ﷺ) being asked about buying fresh dates with dried dates, and he said: 'Do fresh dates decrease in weight when they become dry?' They said: 'Yes.' So he told them not to do that."

"The Messenger of Allah (ﷺ) forbade the Muzabanah. The Muzdbanah means when a man sells the dates of his grove when they are still on the tree, for a measure of dty dates;[2] or, if it is grapes, he sells them when they are still on the vine, for a measure of raisins; or if it is a crop, he sells it for food, estimating the amount (of the crop in the field). He forbade all of these things."

the Messenger of Allah (ﷺ) forbade the Muhaqalah and the Muzabanah.

"The Messenger of Allah (ﷺ) forbade the Muhaqalah and the Muzabanah."

"Zaid bin Thabit narrated to me that the Messenger of Allah (ﷺ) gave a concession regarding the sale of 'Araya.”

"Zaid bin Thabit told me that the Messenger of Allah (ﷺ) gave a concession regarding the sale of the estimated harvest of 'Araya return for dried dates." (Sahih) Yahya (one of the narrators) said: "The 'Araya is when a man purchases dates on the trees for food that his family has that is ripe, by estimating them (the dates)."

the Messenger of Allah (ﷺ) forbade selling animals for animals on credit.

"There is nothing wrong with selling animals, one for two, hand to hand," but he disliked selling them on credit.

the Prophet (ﷺ) bought Safiyyah for seven slaves. (Sahih) (One of the narrators) 'Abdur-Rahman said: "From Dihyah Kalbi.'

'"'On the night in which I was taken on the Night Journey (Al-Isra'), I came to people whose stomachs were like houses, in which there were snakes that could be seen from outside their stomachs. I said: 'Who are these, O Jibra’il?’ He said: 'They are the ones who consumed usury."'

"There are seventy degrees of usury, the least of which is equivalent to a man having intercourse with his mother."

"There are seventy-three degrees of usury."