Where does “حَضْرَت” come from?

حَضْرَت (Classical Persian) comes from Arabic حضرة, from Arabic حَاضِر — present.

Ancestry of “حَضْرَت”, step by step

Step	Language	Word	Meaning
1	Arabic	حضرة	presence; place with settled inhabitants; title...
2	Arabic	حَاضِر	present