Mark 14:11-15
English Standard Version
12And on the first day of Unleavened Bread, when they sacrificed the Passover lamb, his disciples said to him, "Where will you have us go and prepare for you to eat the Passover?"
13And he sent two of his disciples and said to them, "Go into the city, and a man carrying a jar of water will meet you. Follow him,
14and wherever he enters, say to the master of the house, ‘The Teacher says, Where is my guest room, where I may eat the Passover with my disciples?’
15And he will show you a large upper room furnished and ready; there prepare for us."