The Reward of One Person who Accepts Islam Due to Your Teaching

Hazrat Musleh-e-Maud (ra) writes:

“The Holy Prophet (sa) once advised Hazrat Ali (ra) saying, ‘O Ali! Even if one person accepts Islam due to your preaching, that would be better for you than if you had a large herd of sheep’s and goats that were passing between two mountains and seeing them would please you.”

(Hamare Dhimma Tamam Dunya ko Fatah Karne ka Kam he, Anwar al-Ulum, Vol. 18, p. 464)