Sahih Adab al-Mufrad

It is narrated from Sayyiduna Abu Ayyub Ansari (may Allah be pleased with him) that he said: In the presence of the Prophet (peace and blessings of Allah be upon him), a man said: «الحمد لله حمداً كثيراً طيباً مباركاً فيه» "All praise is for Allah, abundant, pure, and blessed praise." The Prophet (peace and blessings of Allah be upon him) said: "Who is the one who said this?" The man remained silent. He thought that he had said something in the presence of the Prophet (peace and blessings of Allah be upon him) that was displeasing to him. Then the Prophet (peace and blessings of Allah be upon him) said: "Who is it? He has spoken rightly." Then the man said: "I said it, and I only hope for good with it." The Prophet (peace and blessings of Allah be upon him) said: "By Him in Whose hand is my soul, I saw thirteen angels racing to take these words up to Allah, the Mighty and Majestic."