俱舍論疏 27.15

27.15

論「已辯依身何故名力至故名為力」，已下第三釋力義也。言無礙者，無知障礙，屈伏佛智令不知故，名為力也。

[On the passage in] the treatise, "Having analyzed the relying physical basis, why are they called powers?... hence they are called powers": Below is the third [section], explaining the meaning of 'power'. The word 'unobstructed' means that the obstruction of ignorance, which would suppress the Buddha's knowledge and cause him not to know, is overcome; hence they are called powers.