Jabir reported God’s Messenger as saying, “A townsman must not sell for a man from the desert; if you leave people alone, God will give them provision from one another.”
Abu Sa'id al-Khudri said that God’s Messenger forbade two ways of dressing and two types of business transaction. He forbade mulamasa and munabadha in a business transaction. Mulamasa means that a man touches another’s garment with his hand, whether at night or by day, without turning it over any more than that involves. Munabadha means that a man throws his garment to another and the other throws his garment, that confirming their contract without inspection or mutual agreement. One of the ways of dressing is the wrapping of the samma, which means that a man puts his garment over one of his shoulders so that one of his sides appears uncovered; the other is when a man wraps himself up in his garment while sitting in such a way that none of it covers his private parts.
He reported God’s Messenger as saying, “One must not offer more than the amount agreed by his brother*, or ask a woman in marriage when his brother has done so, unless he permits him.”
*i.e. when the parties have already agreed on a price.
