"Ni haash yinilyé?"
Translation:What is your name?
yinílyé means your name but Ni meaning "you (sg.)" Might just designate the focus or subject.
Just like Spanish, "yo soy un hombre" is sort of the same as "soy un hombre." Navajo is the same way. However, the verb yi"ni"lyé has "ni" in it already and is kind of redundant if you say it at the beginning unless you want to emphasize.