What is the ruling on marriage by exchange?

The questioner : I understood from his question, O honorable Shaykh, that he is asking about marriage by exchange?

The Shaykh : Marriage by exchange, which is called shighar in the Shari'ah, is forbidden and invalid because the Prophet (peace and blessings be upon him) prohibited shighar and said: Shighar is when a man marries his daughter to a person on the condition that this person marries his daughter to him, such as when a man says to another, "I will marry my daughter to you on the condition that you marry your daughter to me." This is not permissible due to the prohibition of the Prophet (peace and blessings be upon him) and because it leads to harms. Indeed, this man has made his daughter like a commodity through which he achieves his objective. Also, he might marry her to someone who is not a suitable match for her for the sake of his own interest. If someone says, "It is not possible for him to marry her to someone who is not a suitable match without her consent, because a woman cannot be forced into marriage, even if she is a virgin, even if the one forcing her is her father," the answer to that is to say: She might give permission and agree, not out of love for this man who wants to marry her, but for the sake of her father's interest, so her agreement would be without conviction and satisfaction. If this matter has occurred... it is obligatory for the two spouses to refrain from enjoying their wives until the matter reaches the court, and the judge rules as he sees fit in this matter, and his ruling is followed. Yes.

The questioner : He says in his second question, which concerns smoking.