Комментарий к Берешит 41:53

אשר היה, a collective term, hence in the singular היה instead of the plural היו.

ותכילנה, “they came to an end;” according to B’reshit Rabbah, 90,6 the word is to be understood as derived from כלולות as in כלולותיך in Jeremiah 2,2, a reference to physical beauty, i.e. the seven years of plenty had resulted in the whole Egyptian population having a more pleasing and healthy appearance.

ותכילנה, “they came to an end;” this unusual expression for describing the end of something is based on כלולות יופי, “they were completely beautiful, because fully sated.”