Valmiki Ramayana Bala Kanda Sarga 75 Shloka 21

राम O Rama, स: that, विष्णु: Visnu, परपुरञ्जयम् capable of conquering hostile cities, इदम् this, वैष्णवं धनु: bow of Visnu, भार्गवे belonging to Bhrigu race, ऋचीके named Richika, उत्तमम् the best, न्यासम् in trust, प्रादात् gave.

This bow of Visnu, O Rama capable of conquering hostile cities, was given in trust to Richika belonging to the race of Bhrigu.