Om (IAST: Auṃ or Oṃ, Sanskrit: ॐ) is a sacred sound and a spiritual icon in Indian religions….. part of the iconography found in ancient (~ 2000 BC) and medieval era manuscripts, temples, monasteries and spiritual retreats in Hinduism, Buddhism, and Jainism.[5][6] …..

In Hinduism, Om …… refers to Atman (soul, self within) and Brahman (ultimate reality, entirety of the universe, truth, divine, supreme spirit, cosmic principles, knowledge).[9][10][11]The syllable is often found at the beginning and the end of chapters in the Vedas, the Upanishads, and other Hindu texts.[11] It is a sacred spiritual incantation made before and during the recitation of spiritual texts, during puja and private prayers, in ceremonies of rites of passages (sanskara) such as weddings, and sometimes during meditative and spiritual activities such as Yoga.[12][13]…..

In Buddhism, Om is often placed at the beginning ofmantras and dharanis. Probably the most well known mantra is "Om mani padme hum", the six syllable mantra of the Bodhisattva of compassion,Avalokiteśvara….. The first word Om ….. Mani means "jewel" or "bead", Padme meaning the "lotus flower", the Buddhist sacred flower, while Hum represents the spirit of enlightenment. [2][3]