Osman is an NPC who can be found in Al Kharid, just outside the palace. He plays a significant role in the quests Prince Ali Rescue and Contact!. He also makes an appearance in the first cutscene in the Recipe for Disaster quest.
Replacement Keris daggers can be bought from Osman for 20,000 coins after finishing Contact!, if a player lost the one you initially picked up at the end of the quest. If you failed to pick up the dagger on the quest, Osman will give you the dagger free of charge.
Osman • Sq'irk tree