And their Prophet (of God) said to them, `The sign of his sovereignty is indeed that there shall come to you (in his reign) the Tâbût (- the heart) in which there will be Shechinah (- tranquillity) from your Lord and legacy (of good) left by the followers of Moses and the followers of Aaron, the angels bearing it. Verily, there is a sign for you in that, when you are true believers.'