Mahabharata 12.237.10

यद्ब्राह्मणस्य कुशलं तदेव सततं वदेत्तूष्णीमासीत निन्दायां कुर्वन्भेषजमात्मनः

yadbrāhmaṇasya kuśalaṃ tadeva satataṃ vadettūṣṇīmāsīta nindāyāṃ kurvanbheṣajamātmanaḥ

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