On it being forbidden for a townsman to sell on behalf of a desert man, to meet caravans, to bid against another man to raise the price or to make a marriage proposal in the face of another's proposal without his permission

Riyad as-Salihin (The Meadows of the Righteous)

by Imam Nawawi

355. Chapter: On it being forbidden for a townsman to sell on behalf of a desert man, to meet caravans, to bid against another man to raise the price or to make a marriage proposal in the face of another's proposal without his permission

1775. Anas said, "The Messenger of Allah, may Allah bless him and grant him peace, forbade a townsman selling on behalf of a man of the desert, even if it was his full brother." [Agreed upon]

1776. Ibn 'Umar reported that the Messenger of Allah, may Allah bless him and grant him peace, said, "Do not go out to meet goods before they have reached the markets." [Agreed upon]

1777. Ibn 'Abbas stated that the Messenger of Allah, may Allah bless him and grant him peace, said, "Do not go out to meet caravans, and townsmen should not sell on behalf of men of the desert." Tawus said, "I said to Ibn 'Abbas, 'What does he means by "townsmen should not sell on behalf of men of the desert"?' He said, 'They should not be his broker.'" [Agreed upon]

In one variant, "The Prophet forbade meeting caravans [early], a townsman selling on behalf of a man of the desert, a woman imposing the precondition of her sister's divorce, and a man bidding against another man to raise the price, and he forbade bidding against one another and allowing milk to collect in the udder."

1778. Abu Hurayra said, "The Messenger of Allah, may Allah bless him and grant him peace, forbade a townsman to sell on behalf of a man of the desert, people bidding against each other, outbidding each other in order to raise the price, a man to sell against the sale of his brother or to make a marriage proposal in the face of his brother's proposal, and a woman to ask for her sister to be divorced in order to take her place.:

In one variant, he said, "The Messenger of Allah, may Allah bless him and grant him peace, forbade meeting caravans, a Muhajir selling on behalf of a bedouin, a woman making it a precondition that her sister be divorced and a man making a bogus bid against the bid of his brother, and he forbade outbidding in order to raise the price and leaving animals unmilked." [Agreed upon]

1779. Ibn 'Umar reported that the Messenger of Allah, may Allah bless him and grant him peace, said, "No one should sell against the sale of another nor propose marriage in the face of his brother's marriage proposal unless he is given permission to do so." [Agreed upon]

1780. 'Uqba ibn 'Amir reported that the Messenger of Allah, may Allah bless him and grant him peace, said, "The believer is the brother of the believer, and it is not lawful for a believer is sell against the sale of his brother nor propose marriage in the face of his brother's marriage proposal unless he withdraws." [Muslim]