Sahih al-Bukhari 7212

Abū Hurayra reported that the Messenger of God said: “There are three whom God will not speak to on the Day of Resurrection, nor purify, and for whom there will be a painful punishment: a man who has surplus water beside a road and withholds it from a traveler; a man who pledges allegiance to a leader only for worldly gain, so that if he gives him what he wants, he keeps faith with him, but if he does not, he does not keep faith with him; and a man who sells a commodity to another after the afternoon prayer, then swears by God that he was offered such-and-such for it, and the buyer believes him and buys it, although he was not offered that much for it.”