It is narrated from Sayyiduna Abu Habba Badri that when Surah Bayyinah was revealed, Sayyiduna Jibreel appeared in the presence of the Messenger and said: O Muhammad, your Lord commands you to recite this Surah to Ubayy bin Ka'b. So the Prophet (peace be upon him) said to Ubayy: My Lord has commanded me to recite this Surah to you. Upon this, Sayyiduna Ubayy bin Ka'b began to weep and said: Was my name mentioned there? The Prophet (peace be upon him) replied: Yes.