Vedic Knowledge — Introduction

Vedas & Upanishads
Introduction & Overview

आ नो भद्राः क्रतवो यन्तु विश्वतः

Aano bhadra krtavo yantu vishwatah

"Let noble thoughts come to us from all directions."

— Rig Veda 1.89.1

The world's oldest body of sacred knowledge — 4 Vedas, 10 principal Upanishads, 6 Vedangas, and 4 Mahavakyas.

What Are the Vedas?

The word "Veda" derives from the Sanskrit root "vid" — meaning "to know." The Vedas are the oldest and most authoritative scriptures of Hinduism. They are apaurusheya — not authored by any human, but divine knowledge revealed to seers (rishis) in deep meditation.

Shruti

"That which is heard" — the Vedas and Upanishads. Directly revealed; highest authority.

Smriti

"That which is remembered" — Puranas, Mahabharata, Ramayana, Manusmriti. Based on Shruti.

The Four Vedas

10 Mandalas

Rig Veda

ऋग्वेद — ऋग्वेदः

Hymns of praise to the gods (devas)

The oldest and most sacred of the four Vedas. A collection of 1,028 hymns (suktas) arranged in 10 books (Mandalas), composed by seer-poets (rishis) in Vedic Sanskrit. The Rig Veda is the primary source of Vedic mythology and cosmology.

Key Deities: Agni, Indra, Varuna, Mitra, Surya

"आ नो भद्राः क्रतवो यन्तु विश्वतः"

"Aano bhadra krtavo yantu vishwatah"

Let noble thoughts come to us from all directions.

— Rig Veda 1.89.1

40 Adhyayas

Yajur Veda

यजुर्वेद — यजुर्वेदः

Ritual sacrificial prose formulas

The Veda of ritual action — a manual for priests (adhvaryus) conducting Vedic yajnas (fire sacrifices). The Yajur Veda contains both verse and prose formulas. It exists in two main recensions: Shukla (White) and Krishna (Black) Yajur Veda.

Key Deities: Rudra, Vishnu, Prajapati, Agni

"ईशावास्यमिदं सर्वम्"

"Iishaavaasyam idam sarvam"

All this (universe) is enveloped by the Lord.

— Isha Upanishad 1 (Shukla Yajur Veda)

2 Parts (Purvarchika + Uttararchika)

Sama Veda

सामवेद — सामवेदः

Melodic chants — root of Indian classical music

The Veda of melodies. Most of its mantras are drawn from the Rig Veda but set to music. The Sama Veda is considered the origin of Indian classical music (Gandharva Veda). Krishna declares in the Bhagavad Gita (10.22): "Of the Vedas I am the Sama Veda."

Key Deities: Soma, Indra, Agni

"वेदानां सामवेदोऽस्मि"

"Vedanam Samavedosmi"

Of the Vedas, I am the Sama Veda. — Lord Krishna

— Bhagavad Gita 10.22

20 Kandas

Atharva Veda

अथर्ववेद — अथर्ववेदः

Daily life, healing, Ayurveda, cosmic knowledge

The most diverse of the four Vedas — containing hymns for healing, prosperity, protection, and knowledge of cosmic principles. The Atharva Veda is the foundational text for Ayurveda and contains the earliest references to the concept of Brahman as the cosmic absolute.

Key Deities: Bhumi (Earth), Rudra, Skambha (Cosmic Pillar)

"अयमात्मा ब्रह्म"

"Ayam Atma Brahma"

This Self (Atman) is Brahman.

— Mandukya Upanishad 2 (Atharva Veda)

The 4 Mahavakyas

One supreme sentence from each Veda — proclaiming the unity of Brahman and Atman

प्रज्ञानं ब्रह्म

Prajnanam Brahma

Consciousness is Brahman

Rig Veda

Aitareya Upanishad 3.3

अहं ब्रह्मास्मि

Aham Brahmasmi

I am Brahman

Yajur Veda

Brihadaranyaka Upanishad 1.4.10

तत् त्वम् असि

Tat tvam asi

That Thou Art

Sama Veda

Chandogya Upanishad 6.8.7

अयमात्मा ब्रह्म

Ayam Atma Brahma

This Self is Brahman

Atharva Veda

Mandukya Upanishad 2

10 Principal Upanishads

Endorsed by Adi Shankaracharya with commentaries — the pillars of Vedanta philosophy

1

Isha Upanishad

ईशोपनिषद्

Shukla Yajur Veda · 18 verses

Renunciation and action — all is God

2

Kena Upanishad

केनोपनिषद्

Sama Veda · 35 verses

That by which the mind thinks — Brahman

3

Katha Upanishad

कठोपनिषद्

Krishna Yajur Veda · 119 verses

Nachiketa and Yama — the secret of death and immortality

4

Prashna Upanishad

प्रश्नोपनिषद्

Atharva Veda · 67 verses

Six questions on the nature of life and Prana

5

Mundaka Upanishad

मुण्डकोपनिषद्

Atharva Veda · 64 verses

Higher knowledge (Para) vs lower knowledge (Apara)

6

Mandukya Upanishad

माण्डूक्योपनिषद्

Atharva Veda · 12 verses

OM — 4 states of consciousness (Jagrat, Svapna, Sushupti, Turiya)

7

Taittiriya Upanishad

तैत्तिरीयोपनिषद्

Krishna Yajur Veda · 50 verses

Five sheaths (Pancha Kosha) and Ananda (bliss) as Brahman

8

Aitareya Upanishad

ऐतरेयोपनिषद्

Rig Veda · 33 verses

Consciousness is Brahman — Prajnanam Brahma

9

Chandogya Upanishad

छान्दोग्योपनिषद्

Sama Veda · 628 verses

"Tat tvam asi" — that thou art; Uddalaka-Shvetaketu dialogue

10

Brihadaranyaka Upanishad

बृहदारण्यकोपनिषद्

Shukla Yajur Veda · 435 verses

Largest Upanishad — Yajnavalkya dialogues on Atman, Brahman, rebirth

The 6 Vedangas — Limbs of the Vedas

Auxiliary sciences for understanding and preserving the Vedas

1

Shiksha (शिक्षा)

Phonetics & pronunciation

2

Kalpa (कल्प)

Ritual procedure (Shrautasutra, Grihyasutra)

3

Vyakarana (व्याकरण)

Grammar (Panini's Ashtadhyayi)

4

Nirukta (निरुक्त)

Etymology & word explanation

5

Chhandas (छन्दस्)

Metre & verse structure

6

Jyotisha (ज्योतिष)

Astronomy & auspicious timing

Dive deeper into Vedic wisdom — start with the Bhagavad Gita and Ramayana

Read Bhagavad Gita →Gita Summary →

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