Who chooses?

The main difference between sacrifice and ḥerem seems to consist in the question of who designates what should be given to the deity. In the example of חרם [ḥrm] it is usually God who decides what falls under this category (Num 21:2–3 is an exception). In situations of זבח [zbḥ] it is the worshipper who selects, within certain parameters, what he deems suitable as a sacrifice to YHWH.—The Unfavored, page 169 n. 87