BG Chap 17 - The worship of the different faiths
The person endowed with one of three types of faith, becomes endowed with the qualities of the deity he worships, being faithful to the object he worships. Those in the mode of goodness worship the demigods such as the Vasus and Rudra. The Vasus are enumerated as Āpa (water), Dhruva (pole star), Soma (moon), Dhara (earth), Anila (air), Anala (fire), Pratuṣa (dawn), and Prabhāsa (light). Those in the mode of passion worship the Yakṣas and Rākṣasas. Those in the mode of ignorance worship the Pretas and Bhūtas (ghosts and spirits). The Pretas are fallen brāhmaṇas, who attain an airy body after death in the form of Ulāmukhas, Kaṭas or Pūtanas. According to some the Pretas are a type of Piśāca (evil spirit). The Bhūtas are followers of Śiva. Those in tamo guṇa also worship the seven mothers, who are said to be Brahmāṇī, Vaiṣṇavī, Māheśvarī, Kaumārī, Vārāhī, Indrāṇī and Cāmuṇḍī.