領収書

How it works

The object particle を (object) marks 領収書(りょうしゅうしょ) (receipt) as the thing you're asking for. Instead of a full verb, the sentence ends with the set phrase おねがいします (please) — a polite "please give me / I'd like." There's no "I" or "give"; naming the object plus this phrase is the standard polite way to request something.