We say Mussaf on Shabbos corresponding to the Korban Mussaf - ונשלמה פרים שפתינו.
So this is "di-oraisadik". It supplants a Biblical mitzva.
Why then do we say "מענגיה כבוד ינחלו"? How does עונג שבת fit in here? עונג שבת is a later mitzva - from the Navi [See Rambam Shabbos 30-1]!!
Shtark Kashya!
Based on what we wrote here - we can say as follows. קדש היא לכם. Shabbos is YOURS for שכר. ENJJOOOOYYY!! This "enjoy" is di-oraisa!! The specific takanos of eating and drinking etc. are only מדברי קבלה but the fundamental notion of deriving pleasure is Biblical. So the mention of עונג belongs in Mussaf...
[עפ"י דברי מרן רה"י זצ"ל]
Based on what we wrote here - we can say as follows. קדש היא לכם. Shabbos is YOURS for שכר. ENJJOOOOYYY!! This "enjoy" is di-oraisa!! The specific takanos of eating and drinking etc. are only מדברי קבלה but the fundamental notion of deriving pleasure is Biblical. So the mention of עונג belongs in Mussaf...
[עפ"י דברי מרן רה"י זצ"ל]
