مُسْنَدُ أَحْمَدَ
Musnad Ahmad 1839
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Ibn "Abbas: The Messenger of Allah (ﷺ) stroked my head and prayed for wisdom for me.
Musnad Ahmad 1840Sahih (Darussalam) [ , al-Bukhari (75)]