Where does “щамат” come from?

щамат (Avar) comes from Old Armenian շաբաթ, from Classical Syriac ܫܒܬܐ, from Aramaic שַׁבְּתָא, from Hebrew שַׁבָּת, from Akkadian šapattum — 15.

щамат (Avar): Saturday

Definitions

Step	Language	Word	Meaning
1	Old Armenian	շաբաթ	Sabbath; Saturday; week
2	Classical Syriac	ܫܒܬܐ	Sabbath, Saturday; week; dill
3	Aramaic	שַׁבְּתָא	sabbath
4	Hebrew	שַׁבָּת	Sabbath, Shabbat; weekly day of rest; sabbath
5	Akkadian	šapattum	15