ते होचुरुपकोसलैषा सोम्य तेऽस्मद्विद्यात्मविद्या चाचार्यस्तु ते गतिं वक्तेत्याजगाम हास्याचार्यस्तमाचार्योऽभ्युवादोपकोसल३ इति ॥ ४.१४.१ ॥
In plain words
They said, "Upakosala, my dear, this is our knowledge and the knowledge of the Self; but thy teacher will tell thee the way." His teacher came home, and the teacher said to him, "Upakosala!"