Narrated by Aisha (may Allah be pleased with her): During the Battle of the Trench, Sa’d (may Allah be pleased with him) was wounded. A disbeliever of the Quraysh, named Habban bin ‘Ariqah, shot an arrow at him which struck the vein of his arm. The Prophet (peace and blessings be upon him) had a tent pitched for him in the mosque so that he could visit him closely. Then, when the Prophet (peace and blessings be upon him) returned from the Battle of the Trench and had put down his weapons and taken a bath, Jibreel (peace be upon him) came to him, shaking the dust from his head. He said to the Prophet (peace and blessings be upon him),“You have put down your weapons, but by Allah, I have not yet put down mine. You are to march against them.”The Prophet (peace and blessings be upon him) asked,“Against whom?”He pointed towards Banu Qurayza. The Prophet (peace and blessings be upon him) reached Banu Qurayza (and after a severe siege of fifteen days by the Muslim army, the Jews) surrendered by accepting Sa’d bin Mu’adh (may Allah be pleased with him) as the arbitrator. The Prophet (peace and blessings be upon him) gave Sa’d (may Allah be pleased with him) the authority to decide. Sa’d (may Allah be pleased with him) said,“My decision regarding them is that all those capable of fighting among them should be killed, their women and children should be taken captive, and their wealth should be distributed.”