Narrated 'Abdullah:
that the Messenger of Allah (ﷺ) said: "I free myself of the friendship of every Khalil, and if I were to take a Khalil then I would have taken Ibn Abi Quhafah as a Khalil. And indeed your companion is Allah's Khalil." (ES)
English reference (ES): Vol. 1, Book 46, Hadith 3655 (ES)
Arabic reference (ES): Book 49, Hadith 4016 (ES)