And once it happened that R. Eliezer and R. Yehoshua and R. Tzaddok were seated at the (wedding) feast of R. Gamliel's son, when R. Gamliel poured a cup (of wine) for R. Elazar, who declined taking it, and for R. Yehoshua, who took it — whereupon R. Elazar said to him: What is this, Yohoshua? We are seated and R. Gamliel stands over us and serves us? R. Yehoshua: Let him serve. Abraham, the greatest man in the world served the ministering angels, (who came to visit him), thinking them to be Arab idolators, and R. Gamliel should not serve us?
R. Tzaddok: You have forsaken the honor of the L-rd, and you occupy yourselves with the honor of flesh and blood! He who spoke and brought the world into being causes the winds to blow, and raises vapors and clouds and brings down rains and nurtures growths and sets a table for each and every man — and Gamliel should not serve us?