Where does “شَيْئاً” come from?

شَيْئاً (Arabic) comes from Arabic شَيْء — thing; thing, object; thing, a thing, something.

Ancestry of “شَيْئاً”, step by step

Step	Language	Word	Meaning
1	Arabic	شَيْء	thing; thing, object; thing, a thing, something

شَيْئاً — Etymology, Origin & Word History | Etymology Explorer