Ethnography of Raja Dahir's Sindh
Some writers call Raja Dahir a ruler of a predominantly Buddhist state. However, it is possible that the Buddhism of Sindh was actually just Buddhistic Hinduism as it was in Bengal under the Pala Empire and Andhra under the Satavahanas. It is also pointed out by some scholars such as Ikram that only Southern Sindh was Buddhist in majority.
The Chinese Buddhist ambassador to Sindh in A.D. 641, Hiuen Tsiang reported many temples of Hindu deity Lord Shiva, especially along the banks of the Indus River. It is believed that even some Zoroastrians (or at least Magis) had lived in Sindh during the reign of Raja Dahir.
Read more about this topic: Dahir (Raja)