Sahih Muslim 799 a
Anas reported Allah's Messenger (ﷺ) as saying to Ubayy b. Ka'b:
Allah has commanded me to recite the Qur'an to you. He said: Did Allah mention me to you by name? He (the Holy Prophet) said: Allah made a mention of your name to me. (On hearing this) Ubayy b. Ka'b wept.
حَدَّثَنَا هَدَّابُ بْنُ خَالِدٍ، حَدَّثَنَا هَمَّامٌ، حَدَّثَنَا قَتَادَةُ، عَنْ أَنَسِ بْنِ مَالِكٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ لأُبَىٍّ ‏"‏ إِنَّ اللَّهَ أَمَرَنِي أَنْ أَقْرَأَ عَلَيْكَ ‏"‏ ‏.‏ قَالَ آللَّهُ سَمَّانِي لَكَ قَالَ ‏"‏ اللَّهُ سَمَّاكَ لِي ‏"‏ ‏.‏ قَالَ فَجَعَلَ أُبَىٌّ يَبْكِي ‏.‏