The Talmud (Pesachim 68b) states, “R. Yosef said: All agree that on Purim we require ‘for you’ too. What is the reason? Days of feasting and gladness is written in connection therewith.”
Though the literal meaning of the above Talmudic statement is that on Purim one must physically rejoice and not overlook their physical needs, the Previous Lubavitcher Rebbe, Rabbi Yosef Yitzchak Schneersohn, explained its significance in the service of G-d.[1]
The holiday of Purim is expressive of self-sacrifice. It is possible for an individual to martyr themselves in a manner that doesn’t affect their personal identity in their ordinary daily affairs. They thus separate their self-sacrifice from the way that they usually act.
This is the message in the adage, “All agree that on Purim we require ‘for you’ too.” One must draw down the soul’s expression of self-sacrifice into all facets of one’s life.
[1] Sefer HaSichos, 5696, Pg. 245
