A great Rav told me that there is a ????? in ????? ??? to a Yeshiva in the 1950s. Cholov Yisroel was very expensive, and to save money, the Yeshiva wanted to serve the bochruim cholov stam. Rav Moshe paskened that they should server the bochurim only Cholov Yisroel, because being ????? on Cholov Yisroel is a sign of ???? ????, and it is a Yeshiva’s job to teach the bochurim ???? ????. I don’t know where the ????? is, but it can be found in ????? ???.