Mahabharata 12.34.13

इदं च श्रूयते पार्थ युद्धे देवासुरे पुराअसुरा भ्रातरो ज्येष्ठा देवाश्चापि यवीयसः

idaṃ ca śrūyate pārtha yuddhe devāsure purāasurā bhrātaro jyeṣṭhā devāścāpi yavīyasaḥ

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