Mahabharata 12.137.66

निश्चितश्चार्थशास्त्रज्ञैरविश्वासः सुखोदयःउशनाश्चाथ गाथे द्वे प्रह्रादायाब्रवीत्पुरा

niścitaścārthaśāstrajñairaviśvāsaḥ sukhodayaḥuśanāścātha gāthe dve prahrādāyābravītpurā

Our plain-language meaning of this verse is waiting for scholar review.