Nirukta, Phonetic Variants, and Vedic Dhātu–Svara Taxonomy
ऊदृदंतैर्यौति रुक्ष्णुशूङ्स्नुनुक्षुश्चिडीङ्श्रिभिः । वृङ्वृञ्भ्यां च विनैकाचोऽजंतेषु निहताः स्मृताः ॥ ७७ ॥
ūdṛdaṃtairyauti rukṣṇuśūṅsnunukṣuściḍīṅśribhiḥ | vṛṅvṛñbhyāṃ ca vinaikāco'jaṃteṣu nihatāḥ smṛtāḥ || 77 ||
ऊ-, दृ-, दंत- इत्यादींसह, तसेच ‘यौति’ इत्यादि रूपांत; रुक्ष्णु, शूङ्, स्नुनुक्षु इत्यादी धातूंमध्ये व चिड्, ईङ्, श्री-चिन्हांसह; वृङ् व वृञ् यांच्याबरोबरही—एकाच् नसल्यास—अजंत (परस्मैपदी) प्रत्ययांत लोप मानावा, असे स्मृत आहे.
Sanatkumara (teaching Narada technical dharma/vedanga knowledge)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
It emphasizes Vedanga mastery—especially Vyakarana—as a support for dharma and moksha: correct linguistic form protects the intended meaning of mantra, scripture, and teaching.
Indirectly: Bhakti practices rely on accurate names, mantras, and recitations; this technical rule safeguards purity of utterance so devotion is expressed without distortion.
Vyakarana: a sutra-like rule about when certain grammatical markers/augments are considered elided (nihata) under specified root/affix conditions, aiding correct derivation and recitation.