مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2228
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Muhammad bin 'Ali bin ‘Abdullah bin Abbas, from his father, that his grandfather ‘Abdullah bin ‘Abbas (رضي الله عنه) said: The Messenger of Allah (ﷺ) said: “whoever asks a great deal for forgiveness. Allah will make a way out for him from every worry and distress, and Allah will send him provision from sources he never imagined.”
Musnad Ahmad 2234lts isnad is da'eef; al-Hakam bin Mus'ab is unknown]