Wa `alaykum As-Salamu waRahmatullahi wa Barakatuh.
In the Name of Allah, Most Gracious, Most Merciful.
All praise and thanks are due to Allah, and peace and blessings be upon His Messenger.
Dear questioner, we would like to thank you for the great confidence you place in us, and we implore Allah Almighty to help us serve His cause and render our work for His Sake.
Answering your question, Sheikh Ahmad Kutty, a senior lecturer and an Islamic Scholar at the Islamic Institute of Toronto, Ontario, Canada, states:
Christmas is a Christian celebration. Muslims have their celebrations.
Muslims, however, can join their Christian families and friends and partake of the feasts associated with Christmas and other festive occasions, as long as they do not participate in specific religious rituals associated with them.
Allah Almighty knows best.