Where does “مبارک” come from?

مبارک (Classical Persian) comes from Arabic مُبَارَك, from Arabic بَارَكَ — to bless, to sanction.

Ancestry of “مبارک”, step by step

Step	Language	Word	Meaning
1	Arabic	مُبَارَك	—
2	Arabic	بَارَكَ	to bless, to sanction