7. Om is Lightening. बिद्युज्ज्योतिः । “The Veda is called lightening, since the moment when it is uttered (as Om), it enlightens every incorporated being; therefore by the syllable Om let a man adore the infinite splendour of Brahman” (Maitrí Upanishad VII. 11.) यस्मादुच्चरितमात्र एब सर्ब्बं शरीरं बिद्योतयति । तस्मादोमित्यनेनैता उपासीतापरिमितं तेजः । मैत्री उप ७ ।११ ।
8. Om is the Brahman light. ॐ ब्रह्म ज्योति । “The syllable Om is the Brahman light or pure intelligence, veiled behind the fire and breath, and manifested itself at first as the one undivided sound Om.” Thus the Maitrí Upanishad Tíká (VII. 11). यस्मात् प्रणबात्मकमिदं ब्रह्मासीत् तस्मादोमित्यनेनैतत् ब्रह्म तेजो उपासीत् । मैत्री ७ ।११ ।
9. Om is Water. ओमापः । “Om shines in the waters” (Maitrí Upanishad VI. 35). आपो ज्योतिरसोऽमृतं ब्रह्मभूर्भुबःस्वरोम् । मैत्री ६ ।३५ । दीप्यतोमापः । ओङ्कारोऽनुज्ञापनादाप्यायनादापः । इति तट्टीका । Water is said to be the first work of God (आप एबमसजादौ ।) “and the Spirit of God floated on the surface of the waters” hence called नारायणः (Genesis and Manu). Thales found water to be the origin of all things.
10. Om is Flavour &c. रसोबैतत् । “Om is Rasa, moisture, flavour, taste, relish and love (Maitrí Up. VI. 35). The goodness of God is flavour, a man having attained flavour, becomes possessed of joy” (Taittiríya Up II. 7.) ॐ रसोबैतत् । रसः कर्म्म परिपाक निवृत्तत्वात् आदित्यस्य रसतं? सर्ब्ब कर्म्म फलाश्रय इत्यर्थः । By flavour rasa they mean love also and love is believed to be the formative power according to Empedocles.
11. Om is Ambrosia. ओममृतं मधु । “Om is ambrosia the food of gods. (Gr. He ambrosia est setos theon). It is also honey and all sweet.” So the Sruti; अमृतं देबानामोदन हेतुत्वात् ।मैत्री उप ६ ।३५ । असौबामधु । छान्दोग्यं तैत्तिरीयञ्च । १ ।७ ।
12. Om Udgítha. ओमुद्गीथः । “Om, this letter the Udgítha, should be adored, Om is chaunted.” (Ch’hándogya I. 1).
“The Udgítha of Sáma Veda, corresponds with the pranava of the Rig Veda.” (Cowel’s Mait VI. 3).
“The Udgítha is the principle part of the Sáma verse, and sung by Udgátri priests.”
“It is chaunted (Udgíyate), and is therefore called Udgítha and is a Karmángávayava or part of the liturgy.”
“What is Udgítha, that is Om; what is Om, that is Udgítha.” (Maitrí. Ch’chándogya).