Why are Hindus and Muslims in India worshiping dead Jews?

Across India, Jewish tombs are venerated according to Hindu and Muslim rituals, including those of a Jew-turned-Sufi saint whose severed head recited love poems and a Yemenite Kabbalist with supernatural powers. So how did the graves of Jews become such resonant non-Jewish pilgrimage sites?
Source: https://www.haaretz.com