Rashi on Genesis 19:8/רש"י על בראשית י״ט:ח׳

1האל is the same as האלה THESE.

2כי על כן באו FOR AS MUCH AS THEY HAVE COME — For (כי) this kindness please do out of respect to me because that (על כן) they have come בצל קורתי UNDER THE SHADOW OF MY ROOF. — In the Targum this is given by בטלל שרותי: the Targum (Aramaic) for קורה (a beam) is שרותא.