Sunday Tamuz 1, 2nd day of Rosh Chodesh 5703
Chumash: Chukat, First Parsha with Rashi.
Tehillim: 1-9.
Tanya: Ch. 9. In regard (p. 325)...these ad infinitum. (p. 325).
Mesirat Nefesh (self-sacrifice) for Torah-scholars means, "When a man dies in a tent," [1] as interpreted by our sages,[2] to "put to death" all pleasure-taking in worldly matters - for even trivial wordly delights are obstacles to being thoroughly devoted and dedicated to the "tent" of Torah.
Notes:
Bamidbar 19:14.
See Berachot 63b: "From whence do we know that Torah knowledge permanently remains only in an individual who gives his very life (as it were) for it? From the verse, "When a man dies in a tent," i.e. he gives his very life to be in the "tent of Torah," renouncing all wordly pleasures.