English translation
7478. Narrated Ibn 'Abbās رضي الله عنهما that he differed with Al-Ḥurr bin Qais bin Ḥišn Al-Fazārī about the companion of (Prophet) Mūsā (Moses), (i.e., whether he was Khidr or not). Ubayy bin Ka'b Al-Anṣārī passed by them and Ibn 'Abbās called him saying, 'My friend (Ḥurr) and I have differed about (Prophet) Mūsā's companion whom Mūsā (Moses) asked the way to meet. "Did you hear Allāh's Messenger ﷺ mentioning anything about him?" Ubayy said, "Yes, I heard Allāh's Messenger ﷺ saying, "While Mūsā was sitting in the company of some Isrāēlites a man came to him and asked, 'Do you know someone who is more learned than you?' Mūsā said, 'No.' So Allāh sent the Divine Revelation to Mūsā: 'Yes, Our slave, Khidr is more learned than you.' Mūsā (Moses) asked Allāh how to meet him (Khidr). So Allāh made the fish as a sign for him and it was said to him, 'When you lose the fish, go back (to the place where you lose it) and you will meet him.' So Mūsā went on looking for the sign of the fish in the sea. The boy-servant of Mūsā (who was accompanying him) said to him, 'Do you remember (what happened) when we betook ourselves to the rock? I did indeed forget (to tell you about) the fish. None but Shaitān (Satan) made me forget to remember (to tell you about) it.' (V.18:63) Mūsā said: 'That is what we have been seeking.' So they went back retracing their footsteps. (V.18:64). So they both found Khiḏr (there) and then happened what Allāh mentioned about them (in the Qur'ān)! " [See Sūrah 18, Verses 60 to 82 in the Qur'ān].