Sayyiduna Abu Habbah al-Badri (may Allah be pleased with him) said: When the Prophet (peace and blessings be upon him) met Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him), he (peace and blessings be upon him) said: "Jibril (peace be upon him) has commanded me to recite to you the surah 'Lam yakun alladhina kafaru' (Those who disbelieved were not going to desist)" [Surah al-Bayyinah: 1]. Ubayy (may Allah be pleased with him) said: O Messenger of Allah! Was I mentioned by name there? He (peace and blessings be upon him) said: "Yes." He said: So he wept.
Hadith Referenceالمعجم الكبير للطبراني / مسند من يعرف بالكنى / 19026