It is narrated from Hazrat Anas (may Allah be pleased with him) that once the Prophet (peace and blessings be upon him) recited this verse: "He is worthy of being feared and worthy of granting forgiveness," and said: "Your Lord has said, 'I am worthy that people fear Me and do not associate anyone as a deity with Me. Whoever fears associating anyone as a deity with Me, he is worthy that I forgive him.'"
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 12442