Who was the companion sent by the prophet (S.A.W.) from hudaybiyyah to assure the Quraysh of his peaceful mission to makkah?

prophet Muhammad's (S.A.W.) companion to Ta'if was

The number of lashes prescribed by 'Quran 24: 2 for a fornicator is ___
 

Which of of the following does not belong to the group? 

The first migration from makkah to Abyssinia took place in the year ___