Mahabharata 13.102.16

अगस्त्य उवाच · agastya uvāca

कथमेष मया शक्यः शप्तुं यस्य महामुनेवरदेन वरो दत्तो भवतो विदितश्च सः

kathameṣa mayā śakyaḥ śaptuṃ yasya mahāmunevaradena varo datto bhavato viditaśca saḥ

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