Parashas Vayikra · Aliyah 1 · Passuk 3
Chabad.org — English translation + Rashi
Torah Temima points to Bava Kamma 66b (verified; korbano — his offering, not a stolen one).
E-Daf.com — Tsurras Hadaf (size=3)
HebrewBooks / Shas PDF of the daf
English: “His offering” — his offering, and not a stolen one.
R’ Eliezer #2 (מיעוט) — exclusion from the possessive “his offering”: the animal must belong to the one who brings it; a stolen animal is disqualified.
An offering must be the bringer’s own property. A stolen animal is invalid for the altar (with further discussion on the daf regarding acquisition after yeush).