It was narrated from Abu Hurairah that the Messenger of Allah ( صلی اللہ علیہ وسلم ) said: "There are three to whom Allah will not speak on the Day of Resurrection, nor will He look at them or purify them, and theirs will be a painful torment: A man who has surplus water in the desert but refuses to give any to a wayfarer; a man who sells a product to a man after 'Asr and swears by Allah that he bought it for such and such amount, and he believes him, when that is not the case; and a man who swears allegiance to a ruler, and only does so for worldly gains, so if he gives him some of (these worldly benefits) he fulfills his oath of allegiance, and if he is not given anything he does not uphold his oath of allegiance. "

It was narrated from Abu Dharr that the Prophet ( صلی اللہ علیہ وسلم ) said: "There are three to whom Allah will not speak on the Day of Resurrection nor will He look at them or purify them, and theirs will be a painful torment." I said: "Who are they, O Messenger of Allah? For they are indeed losers." He said: "The one who lets his garment hang beneath his ankles, the one who reminds another of what he has given him, and the one who sells his product by means of false oaths."

It was narrated from Abu Qatadah that the Messenger of Allah ( صلی اللہ علیہ وسلم ), said: "Beware of swearing oaths when selling, for it may help you to make a sale but it destroys the blessing."'