Parashas Vayikra · Aliyah 1 · Passuk 3
Chabad.org — English translation + Rashi
Torah Temima points to Bechoros 41b (verified; zachar excludes tumtum and androgynous).
E-Daf.com — Tsurras Hadaf (size=3)
HebrewBooks / Shas PDF of the daf
English: “Male” — male and not female. And why does the Torah state below as well “a male he shall bring”? To exclude a tumtum and an androgynous.
R’ Eliezer #2 (מיעוט) / double statement — the repeated requirement of “male” excludes animals of doubtful or dual sex (tumtum and androgynous).
Only a clearly male animal is eligible for this olah from the herd. A tumtum or androgynous is disqualified.