Mahabharata 1.57.89

भरद्वाजस्य च स्कन्नं द्रोण्यां शुक्रमवर्धतमहर्षेरुग्रतपसस्तस्माद्द्रोणो व्यजायत

bharadvājasya ca skannaṃ droṇyāṃ śukramavardhatamaharṣerugratapasastasmāddroṇo vyajāyata

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