Rabbi Menachem Mendel Groner relates:

I was still a child at the Purim farbrengen of 5726, but the intense pushing toward the end of the farbrengen is etched in my mind. The Rebbe announced that whoever “stretches out his hand” would receive mashkeh from the Rebbe’s own cup, and everyone crowded forward to get some.

R’ Nussy Gourarie, then a bochur, was unable to push his way to the front, and he felt dejected that he didn’t receive mashkeh. His roommate, R’ Bumi Friedland, advised him to extend the Purim farbrengen by learning the Rebbe’s sichos and maamorim for the remainder of the night, and in the morning, approach the Rebbe for mashkeh. Nussy took his advice to heart and did as he suggested.

The following morning, when Nussy approached the Rebbe for mashkeh, the Rebbe went into his room, took out a bottle of mashkeh, and poured for him. Yet, when others asked, saying that they hadn’t received the night before, the Rebbe replied surprisingly, “Today isn’t Purim, we don’t say V’al Hanissim.”

Apparently, through his avoda, R’ Nussy had extended Purim.

(Maynotecha Issue 16, p. 30)