Here is part of the conclusion of the oldest surviving Greek homily for the Feast of the Dormition, written by John, metropolitan of Thessalonica in the seventh century:

The Apostles, however, lifted up the precious body of our most glorious lady, Mary, the Mother of God and ever-virgin, and placed it in a new tomb, in the place the Savior had showed them. They remained in that place, awake in unity of spirit, for three days. And after the third day, they opened the sarcophagus to venerate the precious tabernacle of her who deserves all praise, but found only her grave-garments; for she had been taken away by Christ, the God who became flesh from her, to the place of her eternal, living inheritance. And our Lord Jesus Christ Himself, who bestowed glory on His immaculate Mother Mary Theotokos, will also bestow glory on those who glorify her. (from On the Dormition of Mary, p. 67)