Q: I have come into contact with a guy at work, who had already researched a lot about Islam via the internet. So I've explained to him that to be a Muslim he requires belief in Tawhid (Monotheism) and Risaalat (the prophethood of Nabi Sallallahu Alayhi Wasallam). I took him to the Musjid to see how we offer Salaah etc. He says he believes in Monotheism, but now he's got one question. Why could Islam unconditionally stop/forbid Alcohol, while it only regulated Slavery, and did not forbid it? I couldn't answer him, I replied by saying that it was eventually forbidden, and it was over a period of time, so that the people will willingly accept and obey, he was however not satisfied with my answer. Is there anything wrong in what I said? and please provide an answer.