Assalamualakium do you have to put your garment above your ankles always and also cover your Arwah alway. Also are we allowed to give salaam to a non-Muslim or if he gives it back are we allowed to respond back to their salaam. Barakallahu-Feekum

Ustadh AbdulAziz al-Haqqan

Yes and yes. You can give salam or reply to the sala as Imam Ibn Uthaymeen mentioned that we have already given them peace