In classical Indian philosophy of language, the grammarian Katyayana stated that shabda ("speech") is eternal (nitya), as is artha "meaning", and that they share a mutual co-relation. According to Patanjali, the permanent aspect of shabda is sphoṭa ("meaning"), while dhvani ("sound, acoustics") is ephemeral to shabda.
Om, or Aum, a sacred syllable of Hinduism, Buddhism, and Jainism, is considered to be the first resonating vibrational sound within an individual being. It also denotes the non-dualistic universe as a whole. In Buddhism, Om corresponds to the crown chakra and white light.
Bhartrihari, on the other hand, held a shabda-advaita position, identifying shabda as indivisible, and unifying the notions of cognition and linguistic performance, which is ultimately identical to Brahman. Bhartrhari recognised two entities, both of which may be referred to as shabda. One entity is the underlying cause of the articulated sounds, while the other entity is the functionality that is used to express meaning. Bhartrhari thus rejected the difference posited between the ontological and the linguistic by logicians. His concept of shabda-brahman which identified linguistic performance and creation itself ran parallel to the Greek concept of logos.
Language philosophy in Medieval India was dominated by the dispute of the "naturalists" to the Mimamsa school, notably defended by Kumarila, who held that shabda designates the actual phonetic utterance, and the Sphota school, defended by Mandana Mishra, which identifies sphota and shabda as a mystical "indivisible word-whole".
Śabda (शब्द) means relying on word, testimony of past or present reliable experts, specifically the shruti, Vedas. Hiriyanna explains Sabda-pramana as a concept which means reliable expert testimony. The schools of Hinduism which consider it epistemically valid suggest that a human being needs to know numerous facts, and with the limited time and energy available, he can learn only a fraction of those facts and truths directly. He must rely on others, his parent, family, friends, teachers, ancestors and kindred members of society to rapidly acquire and share knowledge and thereby enrich each other's lives. This means of gaining proper knowledge is either spoken or written, but through Sabda (words). The reliability of the source is important, and legitimate knowledge can only come from the Sabda of reliable sources. The disagreement between the schools of Hinduism has been on how to establish reliability. Some schools, such as Carvaka, state that this is never possible, and therefore Sabda is not a proper pramana. Other schools debate means to establish reliability.
In Sikhism the term Shabad has two primary meanings.
The first context of the term is to refer to a hymn or paragraph or sections of the Holy Text that appears in Guru Granth Sahib, the main holy scripture of the Sikhs. The Guru Granth Sahib is organised by chapters of ragas, with each chapter containing many shabads of that raga. The first Shabad in Guru Granth Sahib is the Mool Mantar. The script used for the Shabad is Gurmukhi. Shabad is the term also used to refer to hymns within other Sikh scriptures, like Deh Siva Var Mohe. Shabad Vani is devotional singing of hymns from Sikh scriptures.
Other faiths and philosophies
Esoterically, Shabd is the “Sound Current vibrating in all creation. It can be heard by the inner ears.” Variously referred to as the Audible Life Stream, Inner Sound, Sound Current or Word in English, the Shabd is the esoteric essence of God which is available to all human beings, according to the Shabd path teachings of Sant Mat, Surat Shabd Yoga, Eckankar, Vardankar (a split-off from Eckankar), and Movement of Spiritual Inner Awareness.
Adherents believe that a satguru, Eck Master, or VARDAN Master, who is a human being, has merged with the Shabd in such a manner that he or she is a living manifestation of it at its highest level (the “Word made flesh”). However, not only can the Satguru attain this, but all human beings are inherently privileged in this way. Indeed, in Sant Mat the raison d’être for the human form is to meditate on the Sound Current, and in so doing merge with it until one's own divinity is ultimately realized.
Naam ("Word") has been described through the use of several different terms. Sant Baljit Singh, a contemporary Sant Mat Master, uses the term "Light and Sound Current". He describes it as the connecting link between human beings and God.
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