From Sahih Muslim (Hadith 1864):
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
Reference: Muslim 1864