Mahabharata 5.104.20

इत्युक्तः प्रत्युवाचेदं गालवो मुनिसत्तमम्प्रीतो मधुरया वाचा विश्वामित्रं महाद्युतिम्

ityuktaḥ pratyuvācedaṃ gālavo munisattamamprīto madhurayā vācā viśvāmitraṃ mahādyutim

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