TheKalimata's video: Gayatri Mantra-108 Times-

The Gāyatrī Mantra is a highly revered mantra, based on a Vedic Sanskrit verse from a hymn of the Rigveda (3.62.10), attributed to the rishi (sage) Viśvāmitra. The mantra is named for its vedic gāyatrī metre.[1] As the verse can be interpreted to invoke the deva Savitr, it is often called Sāvitrī.[2] Its recitation is traditionally preceded by oṃ and the formula bhūr bhuvaḥ svaḥ, known as the mahāvyāhṛti ("great utterance"). The Gayatri Mantra is repeated and cited very widely in vedic literature,[3] and praised in several well-known classical Hindu texts such as Manusmṛti,[4] Harivamsa,[5] and the Bhagavad Gita.[6][7] The mantra is an important part of the upanayanam ceremony for young males in Hinduism, and has long been recited by Brahmin males as part of their daily rituals. Modern Hindu reform movements spread the practice of the mantra to include women and all castes and its use is now very widespread.[8][9]