Lag B'omer, the day of Rashbi's passing, is his Yom Hilula (Day of Rejoicing). This is due to the immense greatness that he acquired at the time of his passing. Not only that, but Rashbi instructed us to rejoice on this day; which includes a granting of ability that enables us to rejoice on this day, not only as a decree from Above, but in a manner that makes rational sense that even our nefesh habehamis (animalistic soul) can appreciate. Rashbi's joy at that time influenced all those around him, and certainly his own students (the greater a student's level of connection with Rashbi, the greater was the quality of his joy at the immense elevation that Rashbi attained), as well as all Jewry, for all generations. Moreover, it is an openly revealed joy. This is a phenomenon that has no equal, not even regarding the passing of Moshe Rabbeinu – and certainly not the other Tanaíim and Amoraíim [who lived in that era]. (Night and Motzei Lag B'omer 5748; Hisvaaduyos pp. 310-311, with fns. 43 and 45)
