Gṛhastha-nitya-karman: Śauca, Sandhyā-vidhi, Pañca-yajña, and Āśrama-krama
नोपास्ते यो द्विजः संध्यां धूर्तबुद्धिरनापदि । पाषंडः स हि विज्ञेयः सर्वधर्मबहिष्कृतः ॥ ६७ ॥
nopāste yo dvijaḥ saṃdhyāṃ dhūrtabuddhiranāpadi | pāṣaṃḍaḥ sa hi vijñeyaḥ sarvadharmabahiṣkṛtaḥ || 67 ||
Sesiapa daripada golongan dwija yang, dengan akal yang menipu dan tanpa sebarang halangan yang benar, tidak melakukan pemujaan Sandhyā, maka dia harus diketahui sebagai pāṣaṇḍa (sesat), tersisih daripada segala amalan dharma.
Sanatkumāra (teaching Nārada in the dharma-upadeśa dialogue)
Vrata: none
Primary Rasa: raudra
Secondary Rasa: shanta
It asserts that Sandhyā worship is a core daily discipline (nitya-karma) for the twice-born; neglecting it without real impediment is treated as a serious fall from Vedic dharma, marking one as outside orthodox conduct.
By insisting on Sandhyā-upāsanā, the text emphasizes that steady daily worship and self-discipline form the ground on which higher devotion matures; bhakti is supported by regular practice rather than negligence and pretense.
It highlights āhnika/nitya-karma procedure—especially Sandhyā-vandana timing and obligation—connected with Śikṣā (mantra recitation discipline) and Kalpa (ritual rule), stressing correct observance when no valid obstacle exists.