Incident regarding his accepting Islam (continued)

Hazrat Abu Bakr Siddeeq (radhiallahu ‘anhu) then says:

I knocked on the door and Rasulullah (sallallahu ‘alaihi wasallam) came out. I then asked, “O Muhammed (sallallahu ‘alaihi wasallam), I have learnt that you have forsaken the ways of your people, and abandoned the religion of your forefathers?” Nabi (sallallahu ‘alaihi wasallam) replied, “O Abu Bakr (radhiyallahu ‘anhu)! I am the messenger of Allah Ta‘ala to you and to humanity at large, so bring Imaan in Allah Ta‘ala.” I then asked, “What is your proof of your being appointed as the messenger of Allah Ta‘ala?” Nabi (sallallahu ‘alaihi wasallam) replied, “The learned Sheikh whom you met in Yemen.”