Merits of the Helpers in Madinah (Ansaar)
Bukhari :: Book 5 :: Volume 58 :: Hadith 154
Narrated Anas bin Malik:
The Prophet said to Ubai, "Allah has ordered me to recite to you: 'Those who disbelieve (Surat-al-Bayina 98).' " Ubai said, "Has He mentioned my name?" The Prophet said, "Yes." On hearing this, Ubai started weeping.
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