I have heard Lord Sri Vishnu being referred as Murari as he killed the asura Mura. While hearing this YouTube video upanyasam on Ekadesi (this is in Tamil and I will try to listen again and mention the moment in mm:ss format), the presenter was saying that the Mura was a asura who was killed by Vishnu indirectly by a women created from Vishnu himself and he quotes this woman's name as Ekadesi.
Can someone put some words with credible reference on that message? If done so, then it would also answer another question What is the importance of Ekadesi?.