Saeed bin Musayyib narrates: Sayyiduna Sa'd bin Abi Waqqas (may Allah be pleased with him) informed him that Sayyiduna Uthman bin Maz'un (may Allah be pleased with him) intended to remain celibate, so the Prophet Muhammad (peace and blessings be upon him) forbade him from this. Sayyiduna Sa'd (may Allah be pleased with him) narrates: If the Prophet (peace and blessings be upon him) had permitted him, we would have had ourselves castrated.