Be aware to Scammers

my friend receive a friend request on Facebook from unknown person then he accept the request, after some days when they chat the person started telling him that there are job opportunities abroad in Canada and they have made everything until they go to work but as the chat grew he started talking that he was being paid a visa fee and he should give him a Visa fee to make it all happen. Please do not agree to hand over that money. Scammers are scammers.