StageExpressionOperation
1yawm yaʾti lā takallamu nafs...Shared condition, jamʿ
2fa-minhum shaqī wa-saʿīdDifferentiation, tafrīq
3fa-ammā alladhīna shaqū ... / saʿidū ...Specific outcomes, taqsīm
Calling the passage merely a gathering or merely a partition misses its full organization: a universal frame, a distinction, and explicitly assigned destinies.
The practical diagnostic is: What unites everyone? What distinguishes the groups? Which outcome is assigned to each?