Unit 7 of 13
Torah Temimah cites Arachin 20a: “value of half of me” = full value.
English: One who says “the value of half of me is upon me” pays the value of the whole — because Scripture says “nefashot.”
Whole-from-half derasha.
Vowing the value of half is treated like vowing a vital part — the full value is due.