The second origin myth relates to  Kṛṣṇa, who gave the caste a devamaṇi (“divine” amulet); which was to be held for ten days each by one family each representing every gotra of the caste. However, when the diamond was passed on to the family representing the Viśvāmitra gotra, two brothers fought for it; and, eventually, it was cut in half. Their guru cursed them that they should live by breaking each other’s hands.

Also, might anyone know of a descriptive grammar of the above mentioned 'mallabhāṣa'? I have come across snippets in old gazetteers of Mysore, etc. Or throw away lines like, "they speak a deficient form of Prakrit called mallabhāsā". 

thanks.