`Abdur Rahman bin `Auf said, "When we came to Medina as emigrants, Allah's Apostle established a bond of brotherhood between me and Sa`d bin Ar-Rabi`. Sa`d bin Ar-Rabi` said (to me), 'I am the richest among the Ansar, so I will give you half of my wealth and you may look at my two wives and whichever of the two you may choose I will divorce her, and when she has completed the prescribed period (before marriage) you may marry her.' `Abdur-Rahman replied, "I am not in need of all that. Is there any marketplace where trade is practiced?' He replied, "The market of Qainuqa." `Abdur- Rahman went to that market the following day and brought some dried buttermilk (yogurt) and butter, and then he continued going there regularly. Few days later, `Abdur-Rahman came having traces of yellow (scent) on his body. Allah's Apostle asked him whether he had got married. He replied in the affirmative. The Prophet said, 'Whom have you married?' He replied, 'A woman from the Ansar.' Then the Prophet asked, 'How much did you pay her?' He replied, '(I gave her) a gold piece equal in weigh to a date stone (or a date stone of gold)! The Prophet said, 'Give a Walima (wedding banquet) even if with one sheep .' "

Allah's Apostle ordered us to do seven things and forbade us from seven. He ordered us to visit the sick, to follow funeral processions, (to say) to a sneezer, (May Allah bestow His Mercy on you, if he says, Praise be to Allah), to accept invitations, to greet (everybody), to help the oppressed and to help others to fulfill their oaths. He forbade us to wear gold rings, to drink in silver (utensils), to use Mayathir (silken carpets placed on saddles), to wear Al-Qissi (a kind of silken cloth), to wear silk, Dibaj or Istabraq (two kinds of silk).

Yahya related to me from Malik from Nafi from Abdullah ibn Umar that Umar ibn al-Khattab said, "Do not sell gold for gold except like for like, and do not increase one part over another part. Do not sell silver for silver except like for like, and do not increase one part over another part. Do not sell silver for gold, one of them at hand and the other to be given later. If someone seeks to delay paying you until he has been to his house, do not leave him. I fear rama for you." Rama is usury.

I heard Ibn Az-Zubair who was on the pulpit at Mecca, delivering a sermon, saying, "O men! The Prophet used to say, "If the son of Adam were given a valley full of gold, he would love to have a second one; and if he were given the second one, he would love to have a third, for nothing fills the belly of Adam's son except dust. And Allah forgives he who repents to Him." Ubai said, "We considered this as a saying from the Qur'an till the Sura (beginning with) 'The mutual rivalry for piling up of worldly things diverts you..' (102.1) was revealed."

The Messenger of Allah (saws) forbade me to wear a gold ring, or a Qassi garment or the use purple saddle-cloths.

Jabir bin `Abdullah said, "When the Prophet died, Abu Bakr received some property from Al-`Ala bin Al-Hadrami. Abu Bakr said to the people, "Whoever has a money claim on the Prophet, or was promised something by him, should come to us (so that we may pay him his right)." Jabir added, "I said (to Abu Bakr), Allah's Apostle promised me that he would give me this much, and this much, and this much (spreading his hands three times)." Jabir added, "Abu Bakr counted for me and handed me five-hundred (gold pieces), and then five-hundred, and then five-hundred."

My grandfather, my father and I gave the pledge of allegiance to Allah's Apostle. The Prophet got me engaged and then got me married. One day I went to the Prophet with a complaint. My father Yazid had taken some gold coins for charity and kept them with a man in the mosque (to give them to the poor) But I went and took them and brought them to him (my father). My father said, "By Allah! I did not intend to give them to you. " I took (the case) to Allah's Apostle . On that Allah's Apostle said, "O Yazid, you will be rewarded for what you intended. O Ma'n, whatever you have taken is yours."

Yahya said that he heard Malik say, "What is done in our community about someone who consumed an animal without the permission of its owner, is that he must pay its price on the day he consumed it. He is not obliged to replace it with a similar animal nor does he compensate the owner with any kind of animal. He must pay its price on the day it was consumed, and giving the value is more equitable in compensation for animals and goods."

Yahya said that he heard Malik say about someone who consumes some food without the permission of its owner, "He returns to the owner a like weight of the same kind of food. Food is in the position of gold and silver. Gold and silver are returned with gold and silver. The animal is not in the position of gold in that. What distinguishes between them is the sunna and the behaviour which is in force.

Yahya said that he heard Malik say, "If a man is entrusted with some wealth and then trades with it for himself and makes a profit, the profit is his because he is responsible for the property until he returns it to its owner. "