Mahabharata 3.156.7

कच्चित्ते गुरवः सर्वे वृद्धा वैद्याश्च पूजिताःकच्चिन्न कुरुषे भावं पार्थ पापेषु कर्मसु

kaccitte guravaḥ sarve vṛddhā vaidyāśca pūjitāḥkaccinna kuruṣe bhāvaṃ pārtha pāpeṣu karmasu

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