Hazrat ‘Ammaar bin Yaasir (radhiyallahu ‘anhu) says:

Hazrat Suhaib bin Sinaan (radhiyallahu ‘anhu) and I had come to Daar-e-Arqam at the same time. We met at the door of Daar-e-Arqam, while Rasulullah (sallallahu ‘alaihi wasallam) was inside, and asked each other what our intention for coming to see Rasulullah (sallallahu ‘alaihi wasallam) was.

I replied, “I intend to go to Rasulullah (sallallahu ‘alaihi wasallam) to listen to his message.” Hazrat Suhaib (radhiyallahu ‘anhu) expressed that he had the same intention. Both of us then entered Daar-e-Arqam where Rasulullah (sallallahu ‘alaihi wasallam) presented the teachings of Islam to us and invited us to bring Imaan. Without any delay, we both accepted his invitation to Islam and were blessed with Imaan.

(Extracted from Seeratul Mustafa 1/168-169)