The Gemara (Pesachim 68B) says: “Everyone agrees that on Shavuos you also need ‘lachem’ (part of the day to be dedicated for your own enjoyment).” Rav Meir Yechiel of Ostrovtza zy”a explains that the simple explanation of the Gemara is that on Shavuos one needs to enjoy himself by eating a seudah and deriving pleasure from the food and drink. However, we can also say that the Gemara is teaching us that Shavuos is an auspicious time to find success in parnassah. It is saying that on Shavuos, Hashem provides us with “lachem”, success for ourselves. This is because we receive the Torah on this day, and if someone doesn’t have livelihood (“kemach”), he cannot have Torah (Avos 3:17).
Sefer Siach Zekeinim (Chelek 2, page 229) relates that the Tiferes Shlomo of Radomsk zy”a once spent Shavuos in Sanz with the Divrei Chaim zy”a. During the tish, the Rov’s son, the Gorlitzer Rov zy”a said, “Tatte, it is now the auspicious time to change the mazal of Feivel the tavernkeeper.”
This man, R’ Feivel, was very poor, and needed a lot of help. The Sanzer Rov said, “The Radomsker Rebbe is here with us. He holds the keys to parnassah.”
When R’ Feivel heard this, he asked the Radomsker Rebbe for a bracha. The Rebbe gave his bracha and from then on, R’ Feivel had sufficient livelihood.
