R' Yehoshua and R' Papyas testified concerning the offspring of a shelamim that one should offer it as a shelamim, for R' Eliezer says that the offspring of a shelamim is not offered as a shelamim, and the Sages say: it is offered. R' Papyas said: I testify that we had a cow [that was a] shelamim sacrifice and we ate it on Pesach and we ate its offspring as a shelamim on the Festival.