Mahabharata 9.41.29

पितामहस्य सरसः प्रवृत्तासि सरस्वतिव्याप्तं चेदं जगत्सर्वं तवैवाम्भोभिरुत्तमैः

pitāmahasya sarasaḥ pravṛttāsi sarasvativyāptaṃ cedaṃ jagatsarvaṃ tavaivāmbhobhiruttamaiḥ

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