Gaṅgā-māhātmya: Siddha–Śilavṛtti-saṃvāda and Gaṅgā-stava (गङ्गामाहात्म्यं—सिद्ध-शिलवृत्ति-संवादः)
यः प्रवृत्तां श्रुतिं सम्यक् शास्त्र वा मुनिभि: कृतम् । दूषयत्यनभिज्ञाय त॑ विद्याद् ब्रह्मघातिनम्
yaḥ pravṛttāṃ śrutiṃ samyak śāstraṃ vā munibhiḥ kṛtam | dūṣayaty anabhijñāya taṃ vidyād brahmaghātinam ||
Bhishma sprach: „Wer ohne wahres Verständnis die maßgebliche Śruti — die vedische Offenbarung, welche rechtes Handeln gebietet — oder die von Weisen verfassten Śāstras verunglimpft, den halte für einen Brahmanen- bzw. Brahmanmörder; denn er begeht ein schweres geistiges Vergehen, indem er die Grundlagen des Dharma untergräbt.“
भीष्म उवाच
Do not condemn Śruti or sage-authored Śāstra without proper understanding; such reckless disparagement is treated as a grave offense because it erodes the very sources that guide dharma and right conduct.
In Bhīṣma’s instruction on dharma (Anuśāsana Parva), he warns the listener that ignorant criticism of Vedic injunctions and authoritative teachings is spiritually dangerous and socially harmful, and he classifies the offender among the gravely sinful.