कदर्थः प्राप्य विज्ञानं ततश्चित्राभिरुक्तिभिः ।चिरकालमसौ तत्र मुनिः पुत्रमबोधयत्
In plain words
Then that muni — kadarthaḥ, a word whose sense here is uncertain — having attained vijñāna, instructed his son there for a long time with varied and wondrous sayings,