Rashi on Genesis 24:23/רש"י על בראשית כ״ד:כ״ג

1ויאמר בת מי את AND HE SAID, WHOSE DAUGHTER ART THOU? — He asked her this after he had given her these presents, for he was confident that, on account of the merit of Abraham, the Holy One blessed be He, had made his journey successful.

2ללין TO LODGE IN — the word means one night’s lodging. The word לין is a noun (of the same form as גיל ,שיר). She however said (Genesis 24:25) ללון (a verb, “to lodge” generally) meaning many nights’ lodging (Genesis Rabbah 60:6).