Do not Work on Shavuos
Verse: כל מלאכת עבודה לא תעשו
Command: Do not perform a Working on Shavuos
Vayikra 23:21
SMG
[the source verse[i] for the Mitzva is כל מלאכת עבודה לא תעשו.
The SMG groups these laws into a single section, the Laws prohibiting Work during the holidays.]
[i] Vayikra 23:21
AMUDAY SHLOMO
[Maharshal does not have a specific comment on this Mitzva. Either his commentary was lost, or the manuscript was never completed.]
RASHI
Rashi does not comment on this verse in Vayikra, nor on the second instance of the verse in Bamidbar[i].
[i] Bamidbar 28:26
Discussion by SMS
The Yerushalmi[i] notes that the holiday is also called[ii] the חג הקציר בכורי מעשיך – the holiday of the reaping. However, as noted in this Mitzva, agricultural work is prohibited on the holiday. [Why then would the holiday be identified with an agricultural work which one is prohibited to perform on the holiday.]
Rabbi Ĉanina said, the method by which these two verses can be upheld is that when the holiday falls out on Shabbos, one celebrates the holiday and does not perform any work. And when it falls out on Shabbos, the next day, one celebrates the holiday [with the חגיגה offering] while reaping.
Meaning, this is the only holiday which can be celebrated [with the holiday offerings] while fully working. The other holidays all have חול המועד – during which holiday offerings can still be brought, where work is somewhat prohibited.
[i] Yer. Ĉagiga 2:4 & Megilla 1:4
[ii] Shemos 23:16