Which place is Qustuntiniyyah?

Q: I would like to know which place or city or country is referred to as Qustuntiniyyah? Some say it refers to present day Istanbul, some think China, some say Spain, etc. 

A: It is Istanbul.

And Allah Ta'ala (الله تعالى) knows best.


Answered by:

Mufti Ebrahim Salejee (Isipingo Beach)