—such as the first Friday of Rajab, the night of mid-Shaʿbān, the entire month of Ramadan, and the two Eids—is unlawful and forbidden, all the more so on the two Eids, for on those days the lights are left burning until well into the forenoon.

Ibn al-Ḥājj, may Allah have mercy on him, said in al-Madkhal while discussing the innovations of the night of mid-Shaʿbān (1/308):

“Do you not see what they have done by adding an exorbitant, unprecedented amount of fuel, so that there is not a single lamp or anything else in the mosque capable of being lit except that they have lit it? They even run ropes between the pillars and balconies, hang lanterns on them, and set them ablaze. The reason why the scholars—may Allah be pleased with them—disliked people rubbing themselves against the Qur’an manuscript, the pulpit, the walls, and the like has already been explained, for such acts were the very cause that led to the initial worship of idols. This excessive lighting outwardly resembles the practice of the fire-worshippers, even if those involved do not hold the same belief, because fire-worshippers kindle their fires, and when the flames are at their strongest and brightest they gather around them intending to worship them. The Lawgiver—blessings and peace be upon him—has urged the Muslims to avoid imitating the followers of false religions, even in the distinctive dress that is peculiar to them.

“Added to this is the gathering of large numbers of women, men, and small children, through whose impurities the mosque is often soiled, alongside the loud noise and excessive idle talk—matters that are worse, more numerous, and graver than what occurs on the night of the twenty-seventh of Rajab. The harms involved on that occasion have already been mentioned, yet on this night they are even more, uglier, and greater, precisely because of the increase in lighting. So observe, may Allah have mercy on us and on you, how these innovations draw one another on until they lead to grave prohibitions.”

End of his words.