Humans have many instincts, innate. Naturally, people can understand it. There is no need for Qur'anic Hadith or any other documentary evidence to explain it. Such as eating on hunger, drinking on thirst, seeking medical attention in case of illness. Why eat if you are hungry? Why do you have to drink thirsty? Why do you have to seek medical help? No different documentary evidence is required to explain this. These are human nature. People understand by nature. On the contrary, if one of them se