Reference for Bava Batra 70:3

רב אשי אמר לעולם שמיה גזלן ומאי לא שמיה גזלן שלא ניתן להשבון:

because R. Hiyya taught: He who robs the public<span class="x" onmousemove="('comment',' The two claimants being regarded as the 'public' (lit., 'many'). ');">⁴</span> is not a robber in the legal sense.<span class="x" onmousemove="('comment',' And cannot be forced to make restitution. ');">⁵</span>

Jastrow