Sayyiduna Abu Bakrah (may Allah be pleased with him) narrates: A man praised another man in the presence of the Prophet (peace and blessings be upon him), so the Prophet (peace and blessings be upon him) said: Woe to you, you have cut your brother’s neck. He (peace and blessings be upon him) said this several times. Then the Prophet (peace and blessings be upon him) said: If any person has to praise his brother, he should say: Regarding such-and-such person, I think such-and-such, but I do not declare anyone pure before Allah.