سنن نسائی · Hadith 2442

Bahz bin Hakim narrated from his father, that his grand father said: “I said: ‘Prophet of Allah صلی اللہ علیہ وآلہ وسلم, I did not come to you until I had sworn more than this many times” — the number of fingers on his hands — “that I would never come to you or follow your religion. I am a man who does not know anything except that which Allah, the Mighty and Sublime, and His Messenger teach me. I ask you by the Revelation of Allah, with what has your Lord sent you to us’?’ He said: ‘With Islam.’ I said: ‘What are the signs of Islam?’ He said: ‘To say, I submit my face to Allah and give up Shirk, and to establish the ‘Salah and to pay the Zakah.” (Hasan)