"Mu’adh ibn Jabal reported: I was with the Prophet and we woke up one day and I said, “O Messenger of God, tell me about a deed that will enter me into Paradise and keep me away from the Fire.” The Prophet, peace and blessings be upon him, said: You have asked about an enormous matter, yet it is easy for one whom God makes it easy. Worship God and do not associate anything with Him, establish the prayer, give the charity, fast the month of Ramadan, and perform pilgrimage to the House."
January 1, 1970
https://en.wikiquote.org/wiki/Islam