Is Islamic Da‘wah obligatory upon all Muslims? I hope there is additional clarity (concerning this issue).
Islamic Da‘wah, or da‘wah to Allah, or da‘wah to Allah's path is obligatory on a specific group among the people, they being the people of knowledge and insight. He who does not possess knowledge or insight is not qualified to call himself a da‘ee, acting in an unguided way.
Thus, this one corrupts (affairs) more than he corrects. Therefore inviting to Allah, His religion, and to Al-Islam is only obligatory on the scholars and the people of knowledge and insight.