Leftover or partially eaten food ("Uchchhishta") is recommended to be offered to Matangi with the devotee in the polluted "Uchchhishta" state, that is, having eaten but not washed, with the remains of food in the mouth and hands. An offering of leftovers to Hindu deities or being in the polluted "Uchchhishta" state is a taboo in mainstream Hinduism. Another taboo that is broken in Matangi worship is the offering to the goddess of a cloth stained with menstrual blood to gain the ability to attract a mate. Menstrual blood is considered polluted in almost all Hindu scriptures and menstruating women are kept away from Hindu worship and temples. The outcaste Matangi community of Nepal collect polluted substances and items related to death and bad luck such as sacrificial animal heads and clothes of the deceased, and offers them at special stones kept at crossroads called "chwasa"s, where the Matangi "consumes" them as an offering, thereby getting rid of the pollution. The "Tantrasara" also advises offerings to Matangi of meat, fish, cooked rice, milk and incense at crossroads or cremations grounds in the dead of the night to overpower enemies and gain poetic talent. Oblations of "Uchchhishta", cat meat and goat meat to the goddess are said to help achieve Supreme knowledge. A text proclaims Matangi's worship becomes fruitful only if the devotee reveres women as goddesses and refrains from criticizing them.