Musnad Ahmad 4129

It was narrated from 'Abdullah bin Mas'ood, from the Prophet (ﷺ), that He said - (the version narrated by) Hajjaj said: We were with the Prophet (ﷺ) and he said - (the version narrated by) Yazeed said: The Messenger of Allah (ﷺ) summoned us and we were forty men. I was one of the last to come to him and he said: "Verily you will prevail and you will acquire booty, and you will conquer other lands. Whoever among you lives to see that, let him fear Allah, enjoin what is good and forbid what is evil. And whoever tells a lie about me deliberately, let him take his place in Hell." Yazeed said: “And let him uphold his ties of kinship.”