Bro, What I have heard/read is that shias can be a part of the sanad(chain) of a reliable hadith. Thats not the issue here. BUT Shias have hadith of their own. Most of them is start like Imam Jafar said... or Imam Fulan said... without any sanad. I m not disregarding the authenticity of Imam Jafar (ra) but the Shias have falsely attributed many hadith to Him WITHOUT a proper sanad to Rasoolullah or the Sahabah. If you look closely the hadith in question, is there a source for it? Is it mentioned any of the Hadith collections?