ST II-II, q. 86
Of Oblations and First-fruits
We must next consider oblations and first-fruits. Under this head there are four points of inquiry:
(1) Whether any oblations are necessary as a matter of precept?
(2) To whom are oblations due?
(3) of what things they should be made?
(4) In particular, as to first-fruits, whether men are bound to offer them?