Mahabharata 12.65.17

इन्द्र उवाच · indra uvāca

मातापित्रोर्हि कर्तव्या शुश्रूषा सर्वदस्युभिःआचार्यगुरुशुश्रूषा तथैवाश्रमवासिनाम्

mātāpitrorhi kartavyā śuśrūṣā sarvadasyubhiḥācāryaguruśuśrūṣā tathaivāśramavāsinām

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