Mahabharata 3.210.2

अचरन्त तपस्तीव्रं पुत्रार्थे बहुवार्षिकम्पुत्रं लभेम धर्मिष्ठं यशसा ब्रह्मणा समम्

acaranta tapastīvraṃ putrārthe bahuvārṣikamputraṃ labhema dharmiṣṭhaṃ yaśasā brahmaṇā samam

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