Reference for Chullin 277:8

אלא דאגבהינהו לאפרוחים ואקדשינהו והדר הדרינהו האי אפילו בחולין נמי לא מיחייב דתנא

[from which we conclude that] just as his house is in his possession so must everything [that he may wish to sanctify] be in his possession?

Jastrow