Sahîh-i Müslim — The Book of Vows — Hadis No: 4241

Abu Huraira reported that the Angel of Death was sent to Moses (peace be upon him) to inform of his Lord's summons. When he came, he (Moses) boxed him and his eye was knocked out. He (the Angel of Death) came back to the Lord and said:You sent me to a servant. who did not want to die. Allah restored his eye to its proper place (and revived his eyesight), and then said: Go back to him and tell him that if he wants life he must place his hand on the back of an ox, and he would be granted as many years of life as the number of hair covered by his hand. He (Moses) said: My Lord what would happen then He said: Then you must court death. He said: Let it be now. And he supplicated Allah to bring him close to the sacred land. Thereupon Allah's Messenger (ﷺ) said: If I were there, I would have shown you his grave beside the road at the red mound

Utba b. Mas, ud reported that 'Abdullah b. 'Abbas contended with Hurr b. Qais b. Hisn al-Fazari aboat the companion of Moses (peace be upon hiin). Ibn 'Abbas said that he was Khadir. There happened to pass Ubayy b. Ka'b Ansari. Ibn Abbas called him and said:Abu Tufail, come to us. There has been a difference of opinion between me and my friend about the companion of Moses whom he wanted to meet on the way. Did hear anything from Allah's meesenger (ﷺ) making a mention of anything? Ubayy said: I heard Allah's Messenger (may Peace be upon him) as saying: As Moses was amongst the group of Bani Isra'il, there came to him a person and he said to him: Do you know anyone having better knowledge than you? Moses said: No. Thereupon Allah revealed to Moses: Of course, there is amongst Our servants Khadir (who has better knowledge) than you. Moses asked the way of meeting him. Allah made the fish a sign and it was said to him: Where you miss the fish return to that (place) and you will soon find him. So Moses moved on as Allah wished him to move on. He then said to his young companion: Bring for us the breakfast. Thereupop that young man said to Moses. when he asked him for the breakfast: Don't you see that as we had reached the Sakhra I forgot the fish and nobody made it forget (in our mind) but the satan that I should remind you of it? Mosed said to that young man: This was what we wanted. So they retraced their steps and met Khadir and the events which followed have been described in His Book except that Yunus (the narrator) said that he followed the traces of fish in the ocean

Anas b. malik reported Allah's Messenger (ﷺ) as saying:I came. And in the narration transmitted on the authority of Haddib (the words are): I happened to pass by Moses on the occasion of the Night journey near the red mound (and found him) saying his prayer in his grave

This hadith has been narrated through another chain of transmitters and the one narrated on the authority of Abdullah (the words are):" Allah's Messenger (ﷺ) is reported to have said: Behold I am free from the dependence of all bosom friends and if I were to choose anyone as bosom friend I would have taken Abu Bakr as my bosom friend. Allah has taken your companion as a friend