(a.s.) avoided that and he relied on the perceptible proofs...
(a.s.) avoided that and he relied on the perceptible proofs that existed in all phenomena in the universe and in the creation of man himself with his wonderful systems such as his brain, sight, hearing, perceiving…etc. These clear proofs have been mentioned in many verses in the Holy Qur’an .
It is worth mentioning that most of the Qur’anic verses that were revealed on monotheism and that refuted the thoughts of the pre-Islamic era (Jahiliyyah; ignorance) were revealed in Mecca and not in Medina, because the people of Mecca were idolaters whereas Medina, which the Prophet (a.s.) took as his capital, was of little polytheism and atheism, and its people believed in Islam and defended it devotedly.
In this good town, the Word of Monotheism was raised high and its lights extended to the nations of the world and the peoples of the earth. (6) The mission of the Prophet (a.s.) was not limited to monotheism and the other spiritual rites only, but also it included all phenomena and affairs of life. The Prophet (a.s.) had established the social systems for the individual, family, society, and state.
He had, as well, set the foreign and interior policies of government which were based on pure justice and truth. The mission of Islam has extended to all sides of life and opened new horizons to reason. It has fully cared for knowledge and made it the base in every thing even the witnesses that should not depend on supposition.
Islam has not permitted the imitation of one’s fathers in the concerns of beliefs, but one must follow knowledge and certainty in this matter to be certain of his beliefs before Allah and before himself. (7) From among what the Prophet (a.s.) was very careful for in his mission was to do away with poverty and put an end to neediness. He legislated (by the command of Allah) taxes such as zakat, khums, and the social insurance, and encouraged charity with all means.
He established his economic systems on the goal of spreading ease among all people and preventing the monopolizing of wealth by some few people. He strictly prohibited the means that made wealth accumulate in the hands of a certain class of people. He prohibited usury, exploitation, monopoly of foods, injustice in dealings, and swindle.
He legislated the law of inheritance that would prevent excessive wealth by not limiting the inheritance to the eldest child as the case in some western countries. Indeed, the Islamic economy can achieve easiness, in its wide notion, for all people.