Śreyas and Paramārtha: The Ribhu–Nidāgha Teaching on Non-Dual Self
Advaita
ब्राह्मण उवाच । एवमुक्त्वा ददौ विद्यां निदाघं स ऋभुर्गुरुः । निदाघोऽप्युपदेशेन तेनाद्वैतपरोऽभवत् ॥ ८७ ॥
brāhmaṇa uvāca | evamuktvā dadau vidyāṃ nidāghaṃ sa ṛbhurguruḥ | nidāgho'pyupadeśena tenādvaitaparo'bhavat || 87 ||
The Brāhmaṇa said: Thus having spoken, the guru Ṛbhu bestowed the sacred knowledge upon Nidāgha. And Nidāgha too, by that instruction, became devoted to Advaita, the truth of non-duality.
Brāhmaṇa (narrator)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: bhakti
It highlights mokṣa-dharma through guru-upadeśa: true liberating knowledge is transmitted by a realized teacher, and the disciple becomes established in Advaita (non-dual vision) through that instruction.
While the verse is primarily jñāna-oriented, it supports bhakti indirectly by emphasizing śraddhā and surrender to the guru’s teaching—an essential devotional attitude that prepares the mind for realization.
No specific Vedāṅga (like Vyākaraṇa or Jyotiṣa) is taught here; the focus is on upadeśa of mokṣa-vidyā—practical spiritual instruction leading to Advaita understanding.