Gati, the wife of the sage Pulaha, gave birth to three sons, named Karmaśreṣṭha, Varīyān and Sahiṣṇu, and all of them were great sages.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
पुलहस्य गतिर्भार्या त्रीनसूत सती सुतान् । कर्मश्रेष्ठं वरीयांसं सहिष्णुं च महामते
pulahasya gatirbhāryā trīnasūta satī sutān | karmaśreṣṭhaṃ varīyāṃsaṃ sahiṣṇuṃ ca mahāmate
SB 4.1.38