What is the ruling on wearing a sports cap (baseball cap), and is it true that Ibn 'Uthaymin issued a fatwa prohibiting it due to imitating disbelievers? And if the ruling is prohibition, what is its justification, and is the imitation still considered to exist given its widespread wearing among Muslims? And is it better to abandon it even if it is permissible?

The summary of Sheikh Ibn Uthaymin’s fatwa (may Allah have mercy on him) regarding wearing a hat is that the basic ruling on wearing it is permissibility unless it is attire specific to disbelievers. If it is, then it is forbidden, based on the hadith: "Whoever imitates a people is one of them." However, if it is common among both Muslims and disbelievers, then there is no harm in wearing it. He mentioned that the prohibition might stem from the wearer glorifying and imitating disbelievers. The Sheikh also pointed out the importance of not deviating from the custom of the people of the land unless it contradicts Islamic law.