Dream Before Accepting Islam

Hazrat Sa’d (radhiyallahu ‘anhu) narrates:

Prior to accepting Islam, I had a dream in which I saw that I was in absolute darkness and was unable to see anything. Suddenly, a moon illuminated the night and I began to follow it. In the dream, I saw those who had preceded me to this moon. I could see Hazrat Zaid bin Haarithah (radhiyallahu ‘anhu), Hazrat ‘Ali bin Abi Taalib (radhiyallahu ‘anhu) and Hazrat Abu Bakr (radhiyallahu ‘anhu). I asked them, “When did you arrive here?” They replied, “Just this moment.” I later on learnt that Rasulullah (sallallahu ‘alaihi wasallam) was secretly inviting to Islam. I thus met him in the valleys of the mountains of Makkah Mukarramah. Rasulullah (sallallahu ‘alaihi wasallam) had just performed Salaah. I then accepted Islam, and none besides these Sahaabah (radhiyallahu ‘anhum) had preceded me in accepting Islam (Note: This Sahaabi mentioned this according to his knowledge. Otherwise, it is proven in other narrations that there were a few other Sahaabah who accepted Islam before him).”

(Usdul Ghaabah vol. 2 pg. 309)