Wa qaala lahum Nabiyyuhum inna Aayata mulkiheee ai yaatiyakumut Taabootu feei sakeenatummir Rabbikum wa baqiyyatummimmaa taraka Aalu Moosa wa Aalu Haaroona tahmiluhul malaaa'ikah; inna fee zaalika la Aayatal lakum in kuntum mu'mineen
And (further) their Prophet said to them: "A Sign of his authority is that there shall come to you the Ark of the covenant, with (an assurance) therein of security from your Lord, and the relics left by the family of Moses and the family of Aaron, carried by angels. In this is a symbol for you if ye indeed have faith."
