Huzoor Tajush Shariah مد ظله العالي was asked if Nikah is valid if the man is wearing the Tie.
Answer:
“Nikah is valid, however wearing the Tie is a bad deed, Haram, and of bad consequences, and if a Muslim wears it while knowing it to be the appearance of the Christians and their symbol then, Ma’aazAllah, due to imitating them this, in reality, will be Kufr, but no Muslim intends this.”