Reference for Kiddushin 61:13

כי אתא רב דימי אמר פעם אחת היה לבוש סירקון של זהב והיה יושב בין גדולי רומי ובאתה אמו וקרעתו ממנו וטפחה לו על ראשו וירקה לו בפניו ולא הכלימה

The Sages once desired merchandise from him, in which there was six-hundred-thousand [gold denarii] profit, but the key was lying under his father, and so he did not trouble him.<span class="x" onmousemove="('comment',' To wake him to take the key. The Jerusalem adds that his father's feet were lying on the chest containing the merchandise and so he could not break it.');">¹⁶</span> Rab Judah said in Samuel's name: R'Eliezer was asked: How far does the honour of parents [extend]? - Said he, Go forth and see what a certain heathen, Dama son of Nethinah by name, did in Askelon.

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