The sage Jātūkarṇya was also a disciple of Śākalya, and after dividing the saṁhitā he received from Śākalya into three parts, he added a fourth section, a Vedic glossary. He taught one of these parts to each of four disciples — Balāka, the second Paila, Jābāla and Viraja.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
जातूकर्ण्यश्च तच्छिष्यः सनिरुक्तां स्वसंहिताम् । बलाकपैजवैतालविरजेभ्यो ददौ मुनिः
jātūkarṇyaśca tacchiṣyaḥ saniruktāṃ svasaṃhitām | balākapaijavaitālavirajebhyo dadau muniḥ
SB 12.6.58