Kratu’s wife, Kriyā, gave birth to sixty thousand great sages, named the Vālakhilyas. All these sages were greatly advanced in spiritual knowledge, and their bodies were illuminated by such knowledge.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
क्रतोरपि क्रिया भार्या वालखिल्यानसूयत । ऋषीन् षष्टिसहस्राणि ज्वलतो ब्रह्मतेजसा
kratorapi kriyā bhāryā vālakhilyānasūyata | ṛṣīn ṣaṣṭisahasrāṇi jvalato brahmatejasā
SB 4.1.39