Sforno on Genesis 24:64/ספורנו על בראשית כ״ד:ס״ד

1ותפול מעל הגמל, she inclined her head while remaining on the camel in honour of Yitzchok. We have a similar expression meaning the same in Kings II 5,21 ויפול מעל המרכבה where there is no reason to understand this as Naamon, the general, “falling” off his chariot, but the verse describes a deferential behaviour by Naamon.