Ramban, on Gen 24:14

“Now, therefore, the maid to whom I shall say: Let down thy pitcher that I may drink: and she shall answer, Drink, and I will give thy camels drink also: let it be the same whom thou hast provided for thy servant Isaac: and by this I shall understand, that thou hast shown kindness to my master.”

“HER THOU HAST APPOINTED FOR THY SERVANT, EVEN FOR ISAAC. Rashi comments: “She is fit for him since she is charitable and worthy of admission into the house of Abraham. And thereby shall I know — this is a petition: ‘Let me know through her that Thou hast shown kindness unto my master.’” If so, Eliezer is saying, “I know for certain that You have appointed her for Your servant Isaac.” But in that case [his petition, which still indicates a doubt as to whether she was the appointed one,] does not connect well. Its interpretation however is as follows: “Make it happen to me this day that the girl to whom I will speak be the one that You have appointed for Your servant Isaac, and with this, show kindness to my master Abraham for with this I will know that You have shown kindness to him if she be of his family and of good mind and of beautiful appearance.” And so he said [when recounting the events of the day]: And let it come to pass, that the maiden, etc., let the same be the woman whom the Eternal hath appointed.”

Imported from an open dataset — not yet checked against the printed edition.