Mahabharata 12.226.9

तपसा वा सुमहता विद्यानां पारणेन वाइज्यया वा प्रदानैर्वा विप्राणां वर्धते यशः

tapasā vā sumahatā vidyānāṃ pāraṇena vāijyayā vā pradānairvā viprāṇāṃ vardhate yaśaḥ

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