The same applies if a man buys a weapon in order to hunt game within the Sacred Precinct. For example, you know that he is a hunter, that he is presently within the Sacred Precinct, and that he bought the weapon to hunt game there. This is unlawful, and the sale is invalid, because it constitutes cooperating in sin and transgression. Reflect upon the Noble Quran, in Allah’s words: “And do not cooperate in sin and transgression.” [al-Ma’idah 5:2] Thousands of issues fall under this verse, because it is a general statement encompassing cooperation in sin and transgression in contracts, charitable gifts, exchanges, marriages, and other matters. Thus, everything that involves cooperation in sin and transgression is unlawful.

Likewise, it is invalid to sell vessels to someone who will use them to serve wine. For example, if I know that people come to the owner of this restaurant to drink wine there, and he comes to buy vessels in which to serve wine, then it is not permissible to sell them to him, because this constitutes cooperating in sin and transgression.

Likewise, if a man buys razors to shave beards, and I know that he bought them for that purpose, it is not permissible, because this is cooperation in sin and transgression. Many ordinary people think that there is nothing wrong with shaving the beard. Indeed, some people ask us during Hajj, saying, “I put on my clothes before shaving,” while gesturing to his beard. We say: Do not shave it, neither after leaving the state of ihram nor before doing so; that is unlawful for you.

Likewise, if a man buys eggs from me in order to gamble, it is not permissible, because this constitutes cooperating in sin and transgression. But how can one gamble with eggs?

They say that if you press an egg lengthwise, it will never break, whereas if you press it crosswise, it will break. People gamble on it in this manner. Thus, if we know that