Qur'an, Al-Imran, Surah 3:51-52
Without doubt, Allah is my Lord and your Lord, so worship Him, for that is the straight path. But when Jesus became aware of their disbelief, he cried, "Who shall be my helpers in the cause of Allah?"
And the disciples replied, "We shall be the helpers of Allah. We believe in Him and bear witness that we have surrendered ourselves before him."