najsh (fraudulent bidding). Agreed upon.

1582 – Abu Hurayrah (may Allah be pleased with him) reported: A man told the Messenger of Allah ﷺ that he was repeatedly cheated in his transactions. The Messenger of Allah ﷺ said, “When you conclude a sale, say: ‘Lā khilābah—no deception.’” Agreed upon.

Khilābah, with a khā’ and a bā’, means cheating or trickery.

1583 – Abu Hurayrah (may Allah be pleased with him) also narrated that the Messenger of Allah ﷺ said, “Whoever corrupts a man’s wife or his slave is not one of us.” Reported by Abū Dāwūd.

Khabbaba, with a khā’ followed by a doubled bā’, means to ruin and deceive.