مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2188
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Ibn ‘Abbas (رضي الله عنه) that the Messenger of Allah (ﷺ) slept until he could be heard breathing deeply, then he got up and prayed, and he did not do wudoo’, ‘Ikrimah said: The Prophet (ﷺ) was protected.
Musnad Ahmad 2194lts isnad is saheeh]