مُسْنَدُ أَحْمَدَ
Musnad Ahmad 3460
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated that 'Ikrimah said: Ibn 'Abbas (رضي الله عنه) said: Abu Jahl said: If I see Muhammad praying at the Ka'bah, I shall certainly step on his neck. News of that reached the Prophet (ﷺ) and he said: “If he does that, the angels will seize him in front of everyone.”
Musnad Ahmad 3483Its isnad is saheeh, al-Bukhari (4958)]