"I'm leaving amongst you two most valuable things- one is Allah's book and the other is my Progeny (Itrat, Ahlebait). These two never separates from each other. Such that they will meet me at the fountain of Kousar (Houz-e-Kausar). Whoever binds himself to these two will definitely attain salvation and whoever distances himself from these two will definitely be ruined. Till you are bounded with these two you will never ever go astray" as said by Prophet (saws) before departure. And in many traditions and Verses it is clear that what ever prophet (saws) gives we have to accept it with out either addition (aqle & Ijma) or subtraction (ithrath) by saying "hazbona kitaballah" only allah's book is enough. If those sects which subtracted one from these two valuable things are gone astray then what about those who have added two more in these two valuable things?