Upanishad

https://en.wikipedia.org/wiki/Nrisimha_Tapaniya_Upanishad

Org
https://www.hinduwebsite.com/vedicsection/upanishads/nrisimhapurva.asp

Net
http://www.vedarahasya.net/nrisimha.htm

Tube
https://www.youtube.com/results?search_query=Narasimha+Poorva+Tapaniya+Upanishad