Mbh 12.37.2c

When an occasion for doubt respecting what should be done arises, that should be regarded as the injunction of the scriptures which ten persons versed in Vedic scriptures or three of those that frequently recite them may declare.[119] The bull, earth, little ants, worms generated in dirt, and poison, should not be eaten by Brahmanas. They should not also eat fishes that have no scales, and four-footed aquatic animals like frogs and others, except the tortoise. Water-fowls called Bhasas, ducks, Suparnas, Chakravakas, diving ducks, cranes, crows, shags, vultures, hawks, owls, as also all four-footed animals that are carnivorous and that have sharp and long teeth, and birds, and animals having two teeth and those having four teeth, as also the milk of the sheep, the she-ass, the she-camel, the newly-calved cow, woman and deer, should not be taken by a Brahmana. Besides this, the food that has been offered to the man, that which has been cooked by a woman who has recently brought forth a child, and food cooked by an unknown person, should not be eaten. The milk also of a cow that has recently calved should not be taken. If a Brahmana takes food that has been cooked by a Kshatriya, it diminishes his energy; if he takes the food provided by a Sudra, it dims his Brahmanic lustre; and if he takes the food provided by a goldsmith or a woman who has neither husband nor children it lessens the period of his life. The food provided by a usurer is equivalent to dirt, while that provided by a woman living by prostitution is equivalent to semen. The food also provided by persons that tolerate the unchastity of their wives, and by persons that are ruled by their spouses, is forbidden.