Why does a shia person while saying his prayers do sajda on a mor (khakh e shafa or turbat)

The practice of the shias of making sajdah on a turbat is based on their
reverence of the land of Karbala where Hadhrat Husain (Radhiyallahu unhu)
was martyred. Their practice is erroneous and unfounded in the Shariah.

And Allah Ta'ala Knows Best

Mufti Ebrahim Desai