تحفة النظار في غرايب الامصار وعجايب الاسفار 11.13.7

11.13.7

after the custom of the infidels of Hind, for they do not permit them to be slaughtered, and among them the penalty for one who slaughters one is to be sewn into its hide and burned! They venerate cows and drink their urine for blessing and as a cure when they are ill, and they smear their houses and walls with their dung. This was among the things that made Khusraw Khān hateful to the Muslims and turned them from him towards Tughluq, so that his rule did not last long, nor did the days of his reign extend, as we shall relate.