Reference for Chullin 182:5

(בראשית לז, יד) לך נא ראה את שלום אחיך ואת שלום וגו'

R'Akiba said: I once asked R'Gamaliel and R'Joshua in the meatmarket of Emmaus where they had gone to buy a beast for the wedding feast of R'Gamaliel's son: It is written: And the sun rose upon him.

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