R. Yonathan says: "she'erah" is her clothing, i.e., clothing that is adapted to her flesh ("she'er"). If she were young, he should not give her (the clothing) of an elderly woman. If she were elderly, he should not give her (the clothing) of a young woman. "and her onah" (time): He should not give her summer (clothing) in the winter or winter (clothing) in the summer, but each (garment) in its time. Whence is "her food" derived? It follows a fortiori, viz.: If he is not permitted to withhold from her things which are not life sustaining, how much more so things which are life sustaining! Whence is "her (conjugal) time derived? It follows a fortiori, viz. If he is not permitted to withhold from her things which she was not married for in the beginning, how much more so things which she was married for in the beginning!