Where does “穆哈蘭姆月” come from?

穆哈蘭姆月 (Chinese) comes from Arabic مُحَرَّم, from Arabic حَرَّمَ — to forbid.

Ancestry of “穆哈蘭姆月”, step by step

Step	Language	Word	Meaning
1	Arabic	مُحَرَّم	forbidden
2	Arabic	حَرَّمَ	to forbid

穆哈蘭姆月 — Etymology, Origin & Word History | Etymology Explorer