مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2943
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Anas that some people from az-Zutt who worshipped idols were brought to 'Ali (رضي الله عنه) and he burned them. Ibn 'Abbas said: Rather the Messenger of Allah (ﷺ) said: "Whoever changes his religion, execute him.”
Musnad Ahmad 2966Its isnad is saheeh, al-Bukhari (3017)]