What is the ruling on a husband who is a teacher going on strike from teaching and thereby harming students, and is his salary lawful, and is the wife sinful if she spends from it?

If a strike is lawful and guaranteed by law and order to redress injustice and achieve demands, then there is no harm for the husband to participate in it, nor in the salary received for the days of the strike.

However, if the strike is unlawful, participation in it is not permissible, and the salary received for the days of an unlawful strike may not be taken unless permitted by the employer. The wife should advise her husband not to participate in an unlawful strike, and she is not sinful for his shortcomings as long as she does not assist him in it or approve of it. She should advise him by clarifying what is right and urging him to fulfill his trust.