﴿فَأَمَّا الَّذِينَ شَقُوا فَفِي النَّارِ لَهُمْ فِيهَا زَفِيرٌ وَشَهِيقٌ﴾
As for those who are wretched, they will be in the Fire, with sighing and gasping therein. (Hūd 11:106)
Fa-ammā introduces the first branch. The words fa-fī al-nār expressly allocate this group its outcome. Thus the general gathering and the distinction between the two groups are followed by particular judgments.
The assignment is stated by the speaker. It is not left to the hearer to guess, which is characteristic of taqsīm rather than the indirect matching of laff wa nashr.