From Bharadvaja, it was obtained by Agnivaishya and from Agnivaishya by my preceptor, and that excellent Brahmana Drona gave it to mc.
भरद्वाजादग्निवेश्यः अग्निवेश्याद् गुरुर्मम। साध्विदं मह्यमददद् द्रोणो ब्राह्मणसत्तमः॥