Musannaf Ibn Abi Shaybah

Hazrat Hammad bin Salamah narrates that Hazrat Thabit said: We were in a place where animals could not cross. So I stood up while reciting these verses! Translation: The Forgiver of sin, the Acceptor of repentance, the Severe in punishment. He says: Then an elder passed by, riding a mule with hair on its forehead, and said: Say like this, O Forgiver of sins, forgive my sin; O Acceptor of repentance, accept my repentance; O Severe in punishment, pardon me from my punishment; O Possessor of length, prolong goodness for me. He says: I recited these words. Then when I looked, I did not see anyone there.