مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2103
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated that Ibn ‘Abbas (رضي الله عنه) said: The Messenger of Allah (ﷺ) did not fight any people until he had called them (to Islam).
Musnad Ahmad 2105Its isnad is saheeh]