Abu Huraira (Allah be pleased with him) reported: Two types of trarisactions have been forbidden (by the Holy Prophet), al-Mlulamasa and al-Munabadha. As far as Mulamasa transaction is concerned, it is that every one of them (the parties entering into transaction) should touch the garment of the other without careful consideration, and al-Munabadha is that every one of them should throw his cloth to the other and one of them should not see the cloth of his friend.

Abu Sa'id al-Khudri (Allah be pleased with him) reported: Allah's Messenger (ﷺ) forbade us (from), two types of business transactions and two ways of dressing. He forbade Mulamasa and Munabadha in transactions. Mulamasa means the touching of another's garment with his hand, whether at night or by day, without turning it over except this much. Munabadha means that a man throws his garment to another and the other throws his garment, and thus confirming their contract without the inspection of mutual agreement.

Abu Huraira (Allah be pleased with him) reported that Allah's Messenger (ﷺ) forbade a transaction determined by throwing stones, and the type which involves some uncertainty.

'Abdullah (b. 'Umar) (Allah be pleased with him) said that Allah's Messenger (ﷺ) forbade the transaction called habal al-habala.

Ibn 'Umar (Allah be pleased with them) reported that the people of pre-Islamic days used to sell the meat of the slaughtered camel up to habal al-habala. And habal al-habala implies that a she-camel should give birth and then the (born one should grow young) and become pregnant. Allah's Messenger (ﷺ) forbade them that (this transaction).

Ibn 'Umar (Allah be pleased with them) reported Allah's Messenger (ﷺ) as having said this: One amongst you should not enter into a transaction when another is bargaining.

Ibn 'Umar (Allah be pleased with them) reported Allah's Messenger (ﷺ) as saying: A person should not enter into a transaction when his brother is already making a transaction and he should not make a proposal of marriage when his brother has already made a proposal except when he gives permission.

Abu Huraira reported Allah's Messenger (ﷺ) as saying: A Muslim should not purchase (in opposition) to his brother.

Abu Huraira reported Allah's Messenger (may peace'be upon him) as saying: Do not go out to meet riders to enter into transaction with them; none of you must buy in opposition to another, nor must you bid against one another; a townsman must not sell for a man from the desert, and do not tie up udders of carnels and sheep, and he who buys them after that has been done has two courses open to him: after he has milked them he may keep them if he is pleased with them, or he may return them along with a sit of dates if he is displeased with them.

Abu Huraira (Allah be pleased with him) reported that Allah's Messenger (ﷺ) forbade the (people) meeting the caravan (for entering into business transaction with them), and the selling of goods by a townsman on behalf of a man of the desert, and seeking by a woman the divorce of her sister (from her husband), and outbidding (against one another), and tying up the udders (of animals), and buying of (things) in opposition to one's brother.

Ibn Umar (Allah be pleased with them) reported that Allah's Messenger (ﷺ) forbade the outbidding (against another).

Ibn 'Umar (Allah be pleased with them) reported Allah's Messenger (ﷺ) as saying: Do not go out to meet merchandise in the way, (wait) until it is brought into the market. This hadith has been reported on the authority of Ibn Numair but with a slight change of words.

Abdullah (Allah be pleased with him) reported Allah's Messenger (ﷺ) as saying: Do not meet the traders (in the way).

Abu Huraira (Allah be pleased with him) reported Allah's Messenger (may peace he upon him) as saying: Do not meet the merchandise (in the way).

Abu Huraira (Allah be pleased with him) reported Allah's Messenger (ﷺ) as saying: Do not meet the merchant in the way and enter into business transaction with him, and whoever meets him and buys from him (and in case it is done, see) that when the owner of (merchandise) comes into the market (and finds that he has been paid less price) he has the option (to declare the transaction null and void).

Abu Huraira (Allah be pleased with him) reported it directly from Allah's Messenger (ﷺ): The townsman'should not sell for a man from the desert (with a view to taking advantage of his ignorance of the market conditions of the city). And Zuhair reported from the Prophet (ﷺ) that he forbade the townsman to sell on behalf of the man from the desert.

Ibn 'Abbas (Allah be pleased with them) reported Allah's Messenger (ﷺ) as saying: The riders (carrying merchandise) should not be met in the way, and townsman should not sell for a man of the desert. The narrator reported. I said to Ibn 'Abbas: What do these words really imply-" The townsman for the man of the desert"? He said: That he should work as a broker on his behalf.

Jabir (Allah be pleased with him) reported Allah's Messenger (ﷺ) as saying: The townsman should not sell for a man from the desert, leave the people alone, Allah will give them provision from one another. Yahya reported it with a slight change of words.

Jabir (Allah be pleased with him) reported a similar hadith from Allah's Messenger (ﷺ) through another chain of transmitters.

Anas b. Malik (Allah be pleased with him) reported: We were forbidden that a townsman should sell for a man of the desert, even if he is his brother or father.