Re: Islamic history answers many contemporary problems: Karen Armstrong
Change is difficult but necessary. She quoted examples from the Holy Prophet’s (PBUH) life where despite resistance from his own companions, he did what he felt was right. The Hijra was an unthinkable step in those times, as was the equitable treatment of women. The Treaty of Hudaibiyah greatly disturbed all the Companions (RA), yet the Prophet (PBUH) went ahead and signed it. This decision was ratified by the revelation of the victory surah immediately afterward.
.
Prophet[saw] was guided by God so his change was divinely approved
we cannot do that otherwise it will be a Bidah