The Prophet (s) said to Ali : O Ali , indeed Almighty Allah has put the sins of your Shiites on me, and than forgave them for me.
Ilal al sharaie, by Shaikh Sadooq , vol. 1, p. 208
This is just an example of Judeo Christian influence on the cult.
Mulla Majlisi also writes in his book, all the sins of Shias will be put on the Prophet [s]