Tafsir of 84:19

Kulayni in “Kafi” (1/413), authenticated by Bahbude and Majlisi.

مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنِ ابْنِ مَحْبُوبٍ عَنْ جَمِيلِ بْنِ صَالِحٍ عَنْ زُرَارَةَ عَنْ أَبِي جَعْفَرٍ ( عليه السلام ) فِي قَوْلِهِ تَعَالَى لَتَرْكَبُنَّ طَبَقاً عَنْ طَبَقٍ قَالَ يَا زُرَارَةُ أَ وَ لَمْ تَرْكَبْ هَذِهِ الْأُمَّةُ بَعْدَ نَبِيِّهَا طَبَقاً عَنْ طَبَقٍ فِي أَمْرِ فُلَانٍ وَ فُلَانٍ وَ فُلَانٍ
Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from ibn Mahbub from Jamil ibn Salih from Zurara from abu Ja‘far (alayhi salam) about the words of Allah, the Most High. “you shall most certainly enter one state after another.” /84:19/. The Imam (alayhi salam) said, “O Zurara, Has this ’Umma (nation) not passed through stages after the Holy Prophet (s.a) and the affairs of three so and so?”

And now complete verse in context.
[84:15] Yea! surely his Lord does ever see him.
[84:16] But nay! I swear by the sunset redness,
[84:17] And the night and that which it drives on,
[84:18] And the moon when it grows full,
[84:19] That you shall most certainly enter one state after another.
[84:20] But what is the matter with them that they do not believe,
[84:21] And when the Quran is recited to them they do not make obeisance?