Quran 2.131-133
When his Lord said unto him: Surrender! he said: I have surrendered to the Lord of the Worlds. The same did Abraham enjoin upon his sons, and also Jacob, (saying): O my sons! Lo! Allah hath chosen for you the (true) religion; therefore die not save as men who have surrendered (unto Him). Or were ye present when death came to Jacob, when he said unto his sons: What will ye worship after me? They said: We shall worship thy god, the god of thy fathers, Abraham and Ishmael and Isaac, One Allah, and unto Him we have surrendered.