Reference for Pesachim 178:6

שאני התם דאמרי ליה כי קבלינך אדעתא דנטרחך קמן למטרח לן לדידך לא קבלינך

Come and hear: Members of a company, one of whom is quickhanded, are at liberty to say [to him], 'Take your portion and go.' And not only that, but even when five arrange for a meal in common,<span class="x" onmousemove="('comment',' Each contributing an equal share.');">¹¹</span> they are at liberty to say to him, 'Take your portion and go.'

Jastrow