Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrates that Sayyiduna Safwan bin Munqidh was an elderly man, and he had an injury on his head. Because of this, the Noble Prophet (peace and blessings be upon him) gave him the option that in any transaction he made, he would have the right to cancel the deal within three days. There was some stammering in his speech, so the Noble Prophet (peace and blessings be upon him) told him: "When you sell, say that there will be no deception." Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) says: I heard him say that instead of the word "khalabah" he used to say "khazabah."