Vishnu Sahasranama Sthothram By Upanyasa Shiromani,Abhinava Vyasa Shri Kandadai Ramanujacharya Ep 86
The Vishnu Sahasranam is found in the Mahabharata. Literally translated this means thousand names of Vishnu. This is found in the Anushasanika Parvam (chapter relating to orders or rules to the kings) of Mahabharata.