"The Messenger of Allah said: 'Do and whoever meets any of them and buys from him the vendor has the choice of annulling the transaction when he comes to the marketplace."'
The Messenger of Allah said: "No town-dweller should sell for a desert-dweller, do not artificially inflate prices, no man should urge a seller to cancel a sale already agreed upon with another buy so as to by the goods himself, no one should make a proposal over the proposal of his brother and no woman should make a proposal over the proposal of his brother and no woman should ask for her sister in faith) to be divorced so as to turn over what is in her vessel Deprived her of her share of maintenance) and so that she may get married in her place: she will have what Allah has decreed or her."
"I heard the messenger of Allah say: "No man should urge anyone to cancel a sale he has already agreed upon with his brother so as to sell him his own goods; no town-dweller should sell for a desert-dweller; do not artificially inflate prices; no man should outbid his brother; and no woman should ask for her sister (in faith) to be divorced so as to turn over what is in her vessel (deprive her of her share of maintenance),
"No tow-dweller should sell for desert-dweller, no man should outbid his brother; and no woman should ask for her sister (in faith) to be divorced so as to turn over what is in her bowl (deprive her of her share of maintenance)"