I want to do something to fill the void left in the world from the passing of a Torah Giant. All the Torah that he learnt, all the Mitzvos that he did, all the merit that this world had because of him - is now not here.
Does anyone have a source for an appropriate way to perpetuate the Torah, Mitzvos, and Gemilas Chasadim that a Torah sage left behind?
(Note: I'm asking my question due to the most recent Gadol BaTorah who just passed away, but my question is not referring specifically to him.)