Reference for Moed Katan 56:28
וכהן גופיה מנלן דתנא דבי ר' ישמעאל (ויקרא כא, ח) וקדשתו לכל דבר שבקדושה לפתוח ראשון ולברך ראשון וליטול מנה יפה ראשון
[at the mourners' repast]? From what is said [by Job]: I chose out their way, and sat chief, and dwelt as a king it, the army, as one comforteth the mourners.<span class="x" onmousemove="('comment',' Job XXIX, 25. Possibly R. Abbahu and Mar Zutra (mentioned next) read into the terms 'chief' and 'king' the popular, familiar usage of these terms in Latin and Greek, by which they designated the person presiding over the toasts at the end of a feast, the rex convivii, basileus, or symposiarch. The following citation from Sem. XIV, (end) , will make it clear: 'Ten cups (toasts) they drink in the house of mourning; two before the meal, five during the meal and three after the meal (namely) one for the benediction of the mourners, one for comforting the mourners and one');"><sup>47</sup></span> 'As one comforteth the mourners'?