TT #159 · Parashas Shoftim · Third Aliyah · Passuk 18:04
The first of your grain, your wine, and your oil, and the first of the fleece of your flock, you shall give to him.
Torah Temimah points to Chullin 136b.
TT lemma: תִּתֵּן לוֹ.
English: ‘You shall give to him’ – by an act of giving.
Derash on the mode of fulfillment (Bavli) — the mitzvah is completed by the act of giving.
The mitzvah is fulfilled by actually transferring the first portion or fleece to a kohen.