Basr bin Sa'id al-Madni بسر بن سعيد المدني العابد · 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.

"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.