Here are some excerpts from the John the Theologian account, which sets the events during the reign of Tiberius.
The whole thing can be found at:
euphrosynoscafe.com/resources/Dormition.html
AS THE ALL-HOLY glorious Mother of God and ever-virgin Mary, as was her wont, was going to the holy tomb of our Lord to burn incense, and bending her holy knees, she was importunate that Christ our God who had been born of her should return to her. And the Jews, seeing her lingering by the divine sepulchre, came to the chief priests, saying: Mary goes every day to the tomb. And the chief priests, having summoned the guards set by them not to allow any one to pray at the holy sepulchre, inquired about her, whether in truth it were so. And the guards answered and said that they had seen no such thing, God having not allowed them to see her when there. And on one of the days, it being the preparation, the holy Mary, as was her wont, came to the sepulchre; and while she was praying, it came to pass that the heavens were opened, and the archangel Gabriel came down to her and said: Hail, thou that didst bring forth Christ our God! Thy prayer having come through to the heavens to Him who was born of thee, has been accepted; and from this time, according to thy request, thou having left the world, shall go to the heavenly places to thy Son, into the true and everlasting life.
And having heard this from the holy archangel, she returned to holy Bethlehem, having along with her three virgins who ministered unto her. And after having rested a short time, she sat up and said to the virgins: Bring me a censer, that I may pray. And they brought it, as they had been commanded. And she prayed, saying: My Lord Jesus Christ, who didst deign through Thy supreme goodness to be born of me, hear my voice, and send me Thy apostle John, in order that, seeing him, I may partake of joy; and send me also the rest of Thy apostles, both those who have already gone to Thee, and those in the world that now is, in whatever country they may be, through Thy holy commandment, in order that, having beheld them, I may bless Thy name much to be praised; for I am confident that Thou hearest Thy servant in everything…
And while we were all praying, there appeared innumerable multitudes of angels, and the Lord mounted upon cherubim in great power; and, behold, a stream of light coming to the holy virgin, because of the presence of her only-begotten Son, and all the powers of the heavens fell down and adored Him. And the Lord, speaking to His mother, said: Mary. And she answered and said: Here am I, Lord. And the Lord said to her: Grieve not, but let thy heart rejoice and be glad; for thou hast found grace to behold the glory given to me by my Father. And the holy mother of God looked up, and saw in Him a glory which it is impossible for the mouth of man to speak of, or to apprehend. And the Lord remained beside her, saying: Behold, from the present time thy precious body will be transferred to paradise, and thy holy soul to the heavens to the treasures of my Father in exceeding brightness, where there is peace and joy of the holy angels,–and other things besides. And the mother of the Lord answered and said to him: Lay Thy right hand upon me, O Lord, and bless me. And the Lord stretched forth His undefiled right hand, and blessed her. And she laid hold of His undefiled right hand, and kissed it, saying: I adore this right hand, which created the heaven and the earth; and I call upon Thy much to be praised name Christ, O God, the King of the ages, the only-begotten of the Father, to receive Thine handmaid, Thou who didst deign to be brought forth by me, in a low estate, to save the race of men through Thine ineffable dispensation; do Thou bestow Thine aid upon every man calling upon, or praying to, or naming the the name of, Thine handmaid. And while she is saying this, the apostles, having gone up to her feet and adored, say: O mother of the Lord, leave a blessing to the world, since thou art going away from it. For thou hast blessed it, and raised it up when it was ruined, by bringing forth the Light of the world. And the mother of the Lord prayed, and in her prayer spoke thus: O God, who through Thy great goodness hast sent from the heavens Thine only-begotten Son to dwell in my humble body, who hast deigned to be born of me, humble as I am, have mercy upon the world, and every soul that calls upon Thy name…