The works of Ādi Śaṅkarācārya

Viṣṇusahasranāmastotram

Verse 149

इति श्रीमहाभारते ।अतः श्रद्धेयमात्मज्ञानम्— 'अश्रद्दधानाः पुरुषा धर्मस्यास्य परंतप ।अप्राप्य मां निवर्तन्ते मृत्युसंसारवर्त्मनि' इति श्रीभ

In plain words

So says the glorious Mahābhārata. Knowledge of the Self, then, is to be met with śraddhā — with real trust: "People who will not trust this dharma, Arjuna, never reach me; they are turned back onto the road of death and saṃsāra" — so says the glorious Bha[gavadgītā].

Close to the Sanskrit

Thus in the glorious Mahābhārata. Therefore knowledge of the Self is to be trusted — 'Men not placing faith in this dharma, O Paraṃtapa, not having attained me, turn back on the road of death-and-transmigration' — thus in the glorious Bha[gavadgītā].