What is the ruling on imitating disbelievers by wearing clothes, accessories, or hair ties that were worn in a previous period during which sins occurred, given the unknown extent of their prevalence among people?

It is advisable to disregard the whispers of Satan concerning thoughts of disbelief (kufr), for passing judgment on it is not light. The Islam of one whose Islam has been established does not vanish due to doubt. Not everyone who falls into disbelief has disbelief fallen upon them. Judging someone to be an apostate requires the fulfillment of the conditions for excommunication and the absence of its impediments. Ablution (ghusl) is not a condition for the validity of embracing Islam, and there is no harm in matters of clothing and the like. What was mentioned is from the whispers of Satan.