مُسْنَدُ أَحْمَدَ
Musnad Ahmad 1955
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated that Ibn ‘Abbas said, concerning the verse "The (Prophet"s) heart lied not in what he (Muhammad(ﷺ)) saw” [an-Najm 53:11]: Muhammad saw his Lord, may He be glorified and exalted, with his heart, twice.
Musnad Ahmad 1956Sahih (Darussalam) [, Muslim (176)]