उपकोसलो ह वै कामलायनः सत्यकामे जाबाले ब्रह्मचर्यमुवास तस्य ह द्वादश वर्षाण्यग्नीन्परिचचार स ह स्मान्यानन्तेवासिनः समावर्तयँस्तँ ह स्मैव न समावर्तयति ॥ १ ॥
In plain words
Upakosala, of the lineage of Kamala, studied as a celibate pupil under Satyakāma, the son of Jabālā. For twelve full years he tended his teacher's sacred fires. Yet while Satyakāma routinely allowed all the other students to complete their studies and return home, he withheld that permission from Upakosala.
Close to the Sanskrit
Upakosala, the descendant of Kamala, lived as a student of sacred knowledge under Satyakāma, the son of Jabālā. He tended his fires for twelve years. While the teacher sent the other resident pupils away on their graduation, he did not send him away.