Mahabharata 9.48.23

असितो देवलश्चैव तस्मिन्नेव महातपाःपरमं योगमास्थाय ऋषिर्योगमवाप्तवान्

asito devalaścaiva tasminneva mahātapāḥparamaṃ yogamāsthāya ṛṣiryogamavāptavān

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