The subject of companions of the prophet is regarded as one the most controversial issues in respect of the identification of its concepts (both, the linguistic and the conventional meanings) among the scholars in the field of Islamic religion. And thus, came this paper to shed lights upon the concept of Companionship both linguistically and conventionally, and to focus on the favor and justice of the companions of the prophet , the measures that control their Knowledge and the notion of companions among relaters and Islamic legists Then I will discuss their sayings with their scientific scholarly spirit away from any kind fanaticism and narrow mindedness. Finally, I will browse the effect of different opinions concerning the concept ' companions of the prophet' on relation
