Mishkat al-Masabih #3818

Abu Rafi' said: Quraish sent me to God’s Messenger and when I saw him Islam was cast into my heart, so I said, "Messenger of God, I swear by God that I shall never return to them.” He replied, "I do not break a covenant or imprison messengers; but return, and if you feel the same as you do just now, come back.” So I went away and then came to the Prophet and accepted Islam. Abu Dawud transmitted it.