Thereafter, some time having passed, the Aśvinī-kumāra brothers, the heavenly physicians, happened to come to Cyavana Muni’s āśrama. After offering them respectful obeisances, Cyavana Muni requested them to give him youthful life, for they were able to do so.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
कस्यचित्त्वथ कालस्य नासत्यावाश्रमागतौ । तौ पूजयित्वा प्रोवाच वयो मे दत्तमीश्वरौ
kasyacittvatha kālasya nāsatyāvāśramāgatau | tau pūjayitvā provāca vayo me dattamīśvarau
SB 9.3.11