Reference for Chullin 115:16

כח דהיתרא עדיף ליה

But why do they not differ as to its validity for ordinary purposes so as to set forth the view of R'Eliezer, that it is invalid even for ordinary purposes? - It is preferable to set forth the view which shows leniency.

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow