Question:

Is it permissible to slaughter a large animal for the aqeeqah of two boys?

Answer:

The aqeeqah of two boys is permissible in a large animal. (Fatawa Mahmudiyah 4/326)

And Allah Ta’ala knows best.

(Hazrat Mufti) Ahmed Khanpuri (May Allah protect him)

Mahmoodul Fatawa Vol.4 Pg.704