Believers in the recitation of the Sahasranama claim that it brings unwavering calm of mind, complete freedom from stress and brings eternal knowledge. A translation of the concluding verses (Phalasruti) of Vishnu sahasranama, state the following: “Nothing evil or inauspicious will befall a man here or hereafter who daily hears or repeats these names.. Whichever devoted man, getting up early in the morning and purifying himself, repeats this hymn devoted to Vasudeva, with a mind that is concentrated on Him, that man attains to great fame, leadership among his peers, wealth that is secure and the supreme good unsurpassed by anything. He will be free from all fears and be endowed with great courage and energy and he will be free from diseases. Beauty of form, strength of body and mind, and virtuous character will be natural to him…. One who reads this hymn every day with devotion and attention attains to peace of mind, patience, prosperity, mental stability, memory and reputation…. Whoever desires advancement and happiness should repeat this devotional hymn on Vishnu composed byVyasa….Never will defeat attend on a man who adores the Lotus-Eyed One (Kamala Nayana), who is the Master of all the worlds, who is birthless, and out of whom the worlds have originated and into whom they dissolve. - Source: wikipedia

Soon after the death of Duryodhana, Yudhisthira was coroneted as the king. Though the war was over, Bheeshma was still lying on the bed of arrows as he vowed to leave this world only when the kingdom of Hastinapur is safe. Knowing this, immediately after the coronation, Yudhisthira, accompanied by Lord Krishna and his brothers, went to Bheeshma. Before leaving his mortal body, Bheeshma gives a long discourse to Yudhisthira on various aspects of life and Dharma. After listening to everything, Yudhisthira wants to know if there is any one thing through which one can achieve all; and Bheeshma prescribes the Vishnusahasranama stotra. The first 13 stanzas are the dialog between Yudhisthira and Bheeshma. The next three stanzas are the customary Dhyana verses. - Source: astrojyoti.com