Speaker: Srila Prabhupada
Source: SB 3.23.7

In his previous life, Nārada was a maidservant’s son, but his mother was engaged in the service of great devotees. He got the opportunity to serve the devotees, and simply by eating the remnants of their foodstuff and carrying out their orders he became so elevated that in his next life he became the great personality Nārada. For spiritual achievement the easiest path is to take shelter of a bona fide spiritual master and to serve him with heart and soul. That is the secret of success. As stated by Viśvanātha Cakravartī Ṭhākura in his eight stanzas of prayer to the spiritual master, yasya prasādād bhagavat-prasādaḥ: by serving or receiving the grace of the spiritual master, one receives the grace of the Supreme Lord. By serving her devotee husband, Kardama Muni, Devahūti shared in his achievements. Similarly, a sincere disciple, simply by serving a bona fide spiritual master, can achieve all the mercy of the Lord and the spiritual master simultaneously.