Mahabharata 12.192.36

तस्मै सोऽथासनं दत्त्वा पाद्यमर्घ्यं तथैव चअब्रवीद्ब्राह्मणो वाक्यं कृत्वा कुशलसंविदम्

tasmai so'thāsanaṃ dattvā pādyamarghyaṃ tathaiva caabravīdbrāhmaṇo vākyaṃ kṛtvā kuśalasaṃvidam

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