Where does “مَحَلَّہ” come from?

مَحَلَّہ (Urdu) comes from Hindi मुहल्ला, from Classical Persian مَحَلَّه.

Ancestry of “مَحَلَّہ”, step by step

Step	Language	Word	Meaning
1	Hindi	मुहल्ला	a neighborhood, suburb, locality; a ward
2	Classical Persian	مَحَلَّه	—