Zayd bin Khalid al-Juhni · The Book on Military Expeditions

That the Messenger of Allah (ﷺ) said: "Kill the elder men among the idolaters and spare the Sharkh amont them." And the Sharkh are the boys who did not begin to grow pubic hair. This Hadith is Hasan Sahih. Hajjaj bin Artah narrated similarly from Qatadah.

"We were presented to the Messenger of Allah (ﷺ) on the day of (the battle of) Quraizah. Whoever had pubic hair was killed and whoever did not was left to his way. I was of those who did not have pubic hair so I was left to my way." This Hadith is Hasan Sahih. This is acted upon according to some of the people of knowledge. They consider pubic hair an indication of the age of responsibility, if it is…

From his father, from his grandfather, that the Messenger of Allah (ﷺ) said during his Khutbah: "Fulfill the allegiances sworn in Jahiliyyah for it" - meaning Islam - "does not add to them except in gravity. And do not initiate new allegiances in Islam." There are narration on this topic from 'Abdur-Rahman bin 'Awf, Umm Salamah, Jubair bin Mut'im, Abu Hurairah, Ibn 'Abbas, and Qais bin 'Asim. This Hadith is Hasan Sahih.

"I was a scribe for Jaz' bin Mu'awiyah at Manadhir when 'Umar's letter came to us (saying): 'Inspect the Zoroastrians around you to take the Jizyah from them. For indeed 'Abdur-Rahman bin 'Awf informed me that the Messenger of Allah (ﷺ) took the Jizyah from the Zoroastrians of Hajar.'" This Hadith is Hasan.