俱舍論記 11.65

11.65

「有幾層級至住何層級」者，正起頌文。一問層級、二問其量、三問住天。

Regarding the passage from "How many terraces are there" to "which terrace do they dwell upon?": This directly introduces the verse text. First, it asks about the terraces; second, it asks about their measurements; third, it asks about the devas who dwell there.