Narrated from Sayyiduna Uthman bin Affan (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: O Uthman! When you buy something, measure it, and when you sell something, measure it as well.

Sayyiduna Suwaid bin Qais says: I and Makhramah ‘Abdi brought cloth from the region of Hajar. The Messenger of Allah, peace and blessings be upon him, came to us and bargained with us for trousers, while there were also people present with us who weighed goods for a wage. The Prophet, peace and blessings be upon him, said to one of the weighers: Weigh it, and add a little extra.

Sayyiduna Abu Safwan Malik bin Umairah (may Allah be pleased with him) says: Before the Hijrah, I bought trousers from the Messenger of Allah (peace and blessings be upon him), and while weighing it, he (peace and blessings be upon him) tilted the scale in my favor.

It is narrated from Sayyiduna Miqdam bin Ma'dikarib (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: Measure your grain, for there will be blessing in it for you.

Sayyiduna Abu Ayyub Ansari (may Allah be pleased with him) has also narrated a hadith of the same kind.

It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him and his family) forbade meeting trade caravans on the way and forbade a townsman from buying and selling on behalf of a villager.

It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him and his family) forbade meeting traders on the way (before they reach the market). However, when their goods reach the markets, then trading is permissible.

Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrates that when people used to buy grain from caravans, the Messenger of Allah (peace and blessings be upon him) would send (his representatives) to the buyers, who would prohibit them from selling that commodity further until they had brought it to their own places.

It is narrated from Sayyiduna Abu Hurairah, may Allah be pleased with him, that the Messenger of Allah, peace and blessings be upon him, said: A man should not make a deal over his brother’s deal, nor should a townsman sell the goods of a villager. Leave people in their state; Allah provides sustenance to some through others. And no woman should demand the divorce of her sister.

It is narrated from Sayyiduna Jabir bin Abdullah (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him and his family) said: A townsman should not sell for a villager; leave people to their own state, Allah Almighty provides sustenance to some through others.