If one declares, “The fetus of this [pregnant ani-mal] is an olah, and she herself is a shelamim,” his declarations stand. [But if he declared,] “[The pregnant animal] is a shelamim and her fetus is an olah,” [the fetus] is the offspring of a shelamim; [these are] the words of R’ Meir. R’ Yose said: If he intended to [say] this from the outset, since it is impossible to utter two designations simulta- neously, his declarations stand. However, if after he declared, “This [pregnant animal] is hereby a shelamim,” he [then] reconsidered and declared, “Her fetus is an olah,” [the fetus] is the offspring of a shelamim.