According to a Hadees of the Holy Prophet, a person undertaking a journey for preaching and serving religion honestly and sincerely only for seeking Allaah Kareem's happiness, will receive 49 crore (490 million) times greater reward than for each of his prayers (Namaaz). Preaching the Religion is undeniably auspicious. But it is also a very delicate matter. During the caliphate of Hazrat Saiyyidinaa Umar Faarooq-e-Aazam (Allaah be pleased with him), only four to five senior respected companions of the Holy Prophet [Sallal Laahu Alaiehi Wa Sallam], were permitted to issue verdicts. Beside them no one else was permitted to do so.
It is a saying (Ahadees) of the Holy Prophet ([Sallal Laahu Alaiehi Wa Sallam],), "Anyone of you who sees anything happening against Sharee' at and Sunnat infront of their eyes, then the person seeing this should try to stop it within his powers; if he cannot afford to do this, he should raise his voice against it; and if even this is not possible for him, he should at least consider it wrong in his heart; but only considering it as evil within one's heart is the lowest degree of Ieemaan (faith)." (Muslim, Abu Da’ud, Nasai, Ibn-e-Majah, Masnad-e-Ahmad) …excerpt from the speech delivered in South Africa –by Hazrat Maulana Shafee Okarvi [Rahmatul Laahi Alaieh]