Allah’s Apostle (pbuh) said, “Our Lord, the Blessed, the Superior, comes every night down on the nearest Heaven to us when the last third of the night remains, saying: “Is there anyone to invoke Me, so that I may respond to invocation?
Is there anyone to ask Me, so that I may grant him his request?
Is there anyone seeking My forgiveness, so that I may forgive him?”

[Bukhari Book:21 No:246]