Eruvin 27A

מפני שיכול לחוץ, ולילך ולאכול.

since he can interpose between himself and the graves and go and eat the food that comprises the eiruv without contracting ritual impurity.

גמ׳ אמר רבי יוחנן: אין למידין מן הכללות, ואפילו במקום שנאמר בו חוץ.

Talmud: R' Yoḥanan said: One may not learn from general statements, i.e., when a general statement is made in a Mishnah using the word all, it is not to be understood as an all-inclusive, general statement without exceptions. This is true even in a place where it says the word except. Even in that case, there may be other exceptions to the rule that are not listed.

מדקאמר: אפילו במקום שנאמר בו חוץ, מכלל דלאו הכא קאי, היכא קאי?

The Talmud notes: From the fact that R' Yoḥanan said: Even in a place where it says except, this proves by inference that he was not relating to the general statement made here in the Mishnah, which uses the word except. To which Mishnah, then, was he relating when he formulated his principle?

התם קאי כל מצות עשה שהזמן גרמא, אנשים חייבין ונשים פטורות. ושלא הזמן גרמא, אחד נשים ואחד אנשים חייבין.

The Talmud answers: He was relating to a Mishnah found there: With regard to all time-bound, positive commandments, i.e., mitzvot that can only be performed at a certain time of the day, or during the day rather than at night, or on certain days of the year, men are obligated to perform them and women are exempt. But positive commandments that are not time-bound, both women and men are obligated to perform.

וכללא הוא דכל מצות עשה שהזמן גרמא נשים פטורות? הרי מצה שמחה והקהל, דמצות עשה שהזמן גרמא הוא, ונשים חייבות.

Is it a general principle that women are exempt from all time-bound, positive commandments without exception? But there is the commandment to eat matza on Passover, the commandment of rejoicing on a Festival, and the commandment of assembly in the Temple courtyard once every 7 years during the festival of Sukkot following the Sabbatical Year, all of which are time-bound, positive commandments, and nevertheless, women are obligated to perform them.