Mahabharata 5.43.6

धृतराष्ट्र उवाच · dhṛtarāṣṭra uvāca

कथं समृद्धमप्यृद्धं तपो भवति केवलम्सनत्सुजात तद्ब्रूहि यथा विद्याम तद्वयम्

kathaṃ samṛddhamapyṛddhaṃ tapo bhavati kevalamsanatsujāta tadbrūhi yathā vidyāma tadvayam

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