פירוש על קידושין 129:6

R. Huna points out that Pesah is not a case of two entities and yet R. Meir and R. Yose still dispute over the meaning of the father’s statement.
Rava responds that these are two separate disputes. This is not a general dispute (as we thought above) over whether a person enters himself into doubt. Rather it is a dispute over the particular meanings of words—does “until pene Pesah” mean until Pesah arrives or until Pesah is over. The dispute over the meaning of eldest/youngest is a separate dispute.