Genesis 24:13-14
24:13 Here I am, standing by the spring, and the daughters of the people who live in the town are coming out to draw water.
24:14 I will say to a young woman, ‘Please lower your jar so I may drink.’ May the one you have chosen for your servant Isaac reply, ‘Drink, and I’ll give your camels water too.’ In this way I will know that you have been faithful to my master.”