Prahlad ji said to the almighty that he knew the world is a well with full of sorrow and darkness. The persons desirous of pleasures are entangled in this. Despite knowing all this, manas (मन) does not enjoy charming plays of the almighty. Manas is in misrable condition. It is polluted by sinful desires and anxious for sexual desires. Manas is plunged into pleasure-pain, fear, wealth, wife, children etc. It is difficult to control. Due to several desires, manas is in misery. Five sense organs (touch pleasure, tasty food, listening beautiful voice, mind blowing smell and beauties) and five organs of action trouble every moment. Enjoyment does not satisfy but increase desires further. Enjoyment decays the organs. Bhakti nourishes the organs and strengthens. Despite knowing very well, manas attaches in the worldly pleasures. Prahlad ji prayed Shri Narsingh Swamy that bestow him strength to control the manas and protect him.
Shri Narsingh Swamy ji advised Prahlad that the polluted manas would not improve without japa. Since his manas is pure, he could had his vision. The world is made beautiful with full of so many substances, so that the human beings enjoy these. But if the persons enjoy these substances without any restrictions and with undue attachments, they plunge into misery.
Shri Narsingh Swamy ji informed by taking two nectars (name japa and discourses of almighty), manas is not attracted towards desires and sense organs do not trouble. But discourses are never complete without kirtan.
Six means are being prescribed to attain undistracted bhakti.
Shri Narsingh Swamy asked Prahlad to take a boon. Prahlad told him that he is bhakta and not a businessman. Shri Narsingh Swamy insisted to give a boon to Prahlad. Prahlad then requested for a boon that no thought should arise in his manas to enjoy sensual pleasure. Further, be kind enough so that his father did not distress. Shri Narsingh Swamy informed that salvation of his father was not possible. But, Prahlad due to your good deeds, he would get salvation. Son like him, provide salvation to twenty one generations (seven generations of mother side, seven of father side and seven of father-in-law side). Then Shri Narsingh Bhagwan disappeared.
Shrimad Bhagwat Mahapuran by Shri Ramchandra Keshav Dongra ji Maharaj