What is the ruling on money a Muslim receives from their employer for the Thanksgiving holiday, knowing that they neither requested this money nor celebrated the holiday? Is this money permissible to dispose of, or is it better to give it away as charity?

The employee is entitled to a full month's salary if he performs his required work. His right to the wage is not invalidated by his cessation of work due to the employer or official holidays. A private contractor is entitled to the wage by dedicating himself to the work, even if he does not actually perform it. Accepting gifts from non-Muslims on their holidays is permissible and is not considered participation in their idolatrous rituals.