Mahabharata 3.183.18

ततः परमधर्मात्मा काश्यपः सर्वधर्मवित्विवादिनावनुप्राप्तौ तावुभौ प्रत्यवेदयत्

tataḥ paramadharmātmā kāśyapaḥ sarvadharmavitvivādināvanuprāptau tāvubhau pratyavedayat

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