Sunan Abi Dawud 770

Rifa’ah b. Rafi’ said:One day we were praying behind the Messenger of Allah (ﷺ). When the Messenger of Allah (ﷺ) raised his head after bowing, he said: Allah listened to him who praised Him. A man behind the Messenger of Allah(ﷺ) said: O Allah, Our Lord, and to Thee be praise, much praise, good and blessed. When the Messenger of Allah (ﷺ) finished his prayer, he asked: Which of you if the one who spoke (the words) just now. The man said: I (uttered) these words, Prophet of Allah. The Messenger of Allah(ﷺ) said: I saw more than thirty angels racing against one another to be the one to write them first