Sunan Abi Dawud 4707
سنن أبي داود#4707SahihIbn ‘Abbas said :Ubayy b. Ka’b told me that the Messenger of Allah (May peace be upon him) said : Al-khidr saw a youth playing with boys. He took him by his head and uprooted it. Moses then said : Hast thou slain an innocent person who had slain none
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Bukhari (122) Sahih Muslim (2380)
In-book reference: 42:112