We cannot search for all those acts that are lawful in the Qur'an. Only the unlawful acts can be searched for in the Qur'an. That is because the number of unlawful acts is very few. When there is a proof in the Qur'an for something being unlawful, there is nothing further to discuss . But if there is no command in the Qur'an proving that something is unlawful, nothing can be banned based on superstitions. - Harun Yahya