Q:
Salaam before I had not known that wearing silk for men was a sin and as narrated by the Prophet pbuh the man who wears it in this life will not wear it in the afterlife. Does this mean I will not wear it in jannah.
Jazakallah
A:
Wa alaykum assalam wa rahmatullah wa barakatuh.
In the Name of Allah, the All-Merciful, the Mercy-Giving.
All praise is due to Allah. Peace and blessings be upon His Prophet Muhammad.
If you really did not know that wearing silk is haram (prohibited) for Muslim men, then your ignorance of the Shari`ah ruling in this case is a valid excuse that relieves you from liability both in this world and in the Hereafter.
May Allah grant us useful knowledge.
Allah knows best.