Yes it is biased Shi a POV pushing I am well aware of the different contradictory versions of the last sermon and other contradictory hadith that Shi a and Sunni use to justify their beliefs These arguments do not belong in this article The article simply describes in a few words both the Sunni and Shi a belief as it describes in a few words the Satanic Verses incidence The stuff that you are trying to insert to push Shi a POV doesn t belong in the article Wikipedia is not the place to push Shi a POV apologetics and propaganda