In Indian religions, Siddhis (Sanskrit: सिद्धि siddhi; fulfillment, accomplishment) are material, paranormal, supernatural, or otherwise magical powers, abilities, and attainments that are the products of yogic advancement through sādhanās such as meditation and yoga. The term ṛddhi (Pali: iddhi, "psychic powers") is often used interchangeably in Buddhism.
 Siddhi is a Sanskrit noun which  can be translated as "knowledge", "accomplishment", "attainment", or "success".
 The Visuddhimagga is one of the texts to give explicit details about how spiritual masters were thought to actually manifest supernormal abilities. It states that abilities such as flying through the air, walking through solid obstructions, diving into the ground, walking on water and so forth are achieved through changing one element, such as earth, into another element, such as air. The individual must master kasina meditation before this is possible. Dipa Ma, who trained via the Visuddhimagga, was said to demonstrate these abilities.
 In the Panchatantra, an ancient Indian collection of moral fables, siddhi may be the term for any unusual skill or faculty or capability.[citation needed]
 In Patañjali's Yoga Sutras IV.1 it is stated, Janma auṣadhi mantra tapaḥ samādhijāḥ siddhayaḥ, "Accomplishments may be attained through birth, the use of herbs, incantations, self-discipline or samadhi".
 According to different sources, below are the eight classical siddhis (Ashta Siddhi) or eight great perfections:
 In Shaivism, siddhis are defined as "Extraordinary powers of the soul, developed through consistent meditation and often uncomfortable and grueling tapas, or awakened naturally through spiritual maturity and yogic sādhanā."
 In Vaishnavism, the term siddhi is used in the Sarva-darśana-saṃgraha of Madhvacharya (1238–1317), the founder of Dvaita (dualist) philosophy.
 In the Bhagavata Purana, the five siddhis brought on by yoga and meditation are:
 In the Bhagavata Purana, Krishna describes the ten secondary siddhis:[citation needed]
 In the Samkhyakarika and Tattvasamasa, there are references to the attainment of eight siddhis by which "one becomes free of the pain of ignorance, one gains knowledge, and experiences bliss".
The eight siddhis hinted at by Kapila in the Tattvasamasa are, as explained in verse 51 of the Samkhyakarika:
 It is believed that the attainment of these eight siddhis renders one free of the pain of ignorance and gives one knowledge and bliss.
 Ganesha, Hanuman, various forms of Devi, Vishnu and various other deities are popularly seen as the keepers of siddhis, with the ability to grant them to the worshipper.
 In Sikhism, siddhi means "insight". "Eight Siddhis" is a term used for insight of the eight qualities of Nirankar or a.k.a. Akal Purakh mentioned in the Mul Mantar in the Guru Granth Sahib. God has eight qualities: Ek Onkar, Satnam, Kartapurakh, Nirbhao, Nirvair, AkaalMurat, Ajooni and Svaibhang. The one who has insight into these qualities is called Sidh or Gurmukh.[citation needed]
 Sidh means the one who has mastered his self.
 In Tantric Buddhism, siddhi specifically refers to the acquisition of supernatural powers by psychic or magical means or the supposed faculty so acquired. These powers include items such as clairvoyance, levitation, bilocation and astral projection, materialization, and having access to memories from past lives.[citation needed]