ثُمَّ رَدَدْنَـٰهُ أَسْفَلَ سَـٰفِلِينَ ۝٥ What are نَا and هُ in رَدَدْنَـٰهُ?

Surah At-Tin — Part 1

• Na is subject and hu is object
• Both are subjects
• Na is object and hu is subject
• Both are genitive