Pahlavi Texts, Part III (SBE24), E.W. West, tr. [1885], at sacred-texts.com
1. The seventy-third subject is this, that, when a cow or a goat has eaten dead matter 4, in any place, nothing whatever of its flesh, or milk, or hair, should come into use for one year. 2. After that one year it is clean: and, if it be pregnant, its young one is likewise not clean for one year.
3. And if a domestic fowl has eaten dead matter, its flesh and eggs are, in like manner, not clean for one year.
337:4 See Pahl. Vend. VII, 189-192, Sls. II, 109.