And the first day of unleavened bread, when they killed the passover, his disciples said unto him, Where will you that we go and prepare that you may eat the passover? And he sent forth two of his disciples, and said unto them, Go into the city, and there shall meet you a man bearing a pitcher of water: follow him. And wherever he shall go in, say to the owner of the house, The Master says, Where is the guest room, where I shall eat the passover with my disciples? And he will show you a large upper room furnished and prepared: there make ready for us. And his disciples went forth, and came into the city, and found as he had said unto them: and they made ready the passover.
(Mark 14:12-16)