People must achieve certainty based on their conscience about any thought or belief they live by, advocate and spread. To follow any ideology, person or cause about which one is not knowledgeable is forbidden in the Qur’an. Moreover, Allah states that on the Day of Resurrection, people will be held accountable for whatever they believe is true and propagate with their eyes, ears and hearts:
Do not pursue what you have no knowledge of. Hearing, sight and hearts will all be questioned. (Surat al-Isra’; 36)
The only thought system of whose authenticity man can ever be certain is the one that Allah explains in detail in the Qur’an and the Sunna of our Prophet (saas). Muslims therefore reject any belief which is not compatible with the Qur’an and the Sunna, as well as with their consciences. In order for a Muslim to support an individual or an idea, it is necessary for that idea to be ratified both in the Qur’an and the Sunna and for the individual to act within the boundaries of Qur’anic morality.
Moreover, a believer speaks with meticulous care while explaining, promoting or communicating any scientific, social or religious subject. He engages in no commercial or social partnership that does not conform to Islamic morality. Any idea bereft of sound grounds cannot earn a believer’s support. Therefore, the accuracy of his every statement or suggestion will be obvious to everyone.