What is the ruling on holding feasts and celebrations in jubilation over a sports team's victory, and what is the ruling on attending them?

"The fatwa concerning banquets for sports team fans mediates between the original permissibility and an assessment of the current reality and its consequences, in order to achieve correctness and remove hardship. The current reality reveals errors, violations, and detrimental habits, including:

1. Wasting money to no avail, which is a forbidden extravagance, and a Muslim is accountable for their wealth. 2. Filling hearts with hateful fanaticism and increasing division among people, which weakens the Ummah. 3. Wasting lives, mental, and physical energies, at a time when the Ummah needs the efforts of its children for construction and renaissance.

These warnings do not apply to all fans, but they are a caution against heedlessness. It has been reported that any gathering in which Allah is not mentioned and prayers are not sent upon His Prophet will be a source of regret and remorse for its attendees. If a banquet meal to which the rich are invited and the poor are left out is the worst of foods, then what is invited to for hateful fanaticism and an imagined joy is even more deserving of being considered evil, especially if it involves boasting, obscenity, or falsehood.

Therefore, the website considers it disliked to hold or attend these banquets."