Matsya Purana 207.18

207.18

śvetodaraḥ kṛṣṇapārśvo brāhmaṇasya tu śasyate.
snigdhā raktena varṇena kṣatriyasya praśasyate .. 207.18 ..

The Brâhmaṇas should set free the following class of bulls, viz—red tawny or reddish, white or black in colour, tawny reddish back, of variegated colours, with long ears and shoulders with glossy hair, red eyes or having nutbrown colour near the horns with white stomach or black sides The Kshatriyas should set free a bull of red and beautiful colour, the Vaiśyas of golden colour and the Śudras of black colour The bull with its horns pointing forward towards the eyebrows, ought to be set free by men of all classes The bull having its feet like those of the white cat, with tawny or reddish in colour, with eyes shining like a jewel having white feet or with only two feet white, or of the colour of a pigeon or a partridge, is also said to be a good one It is called Karat—16 22