維摩經略疏垂裕記 6.121

6.121

二、那律受屈。三、梵王請問，二：初、分科。二、隨釋，三：初、歎未曾有。二、作禮致敬。三、正請問。孰，誰也。

Second, Aniruddha yielding. Third, the Brahmā King asking, in two: first, dividing the sections. Second, explaining in sequence, in three: first, praising what has never been before. Second, paying homage and showing reverence. Third, directly inquiring. Shu means 'who.'