瑜伽論記 7.537

7.537

以細折麁，文分有四：初、折四大；二、折空界；三、折識界；四、折十色界。

Regarding analyzing the coarse into the subtle, the text is divided into four: first, analyzing the four great elements; second, analyzing the space element; third, analyzing the consciousness element; fourth, analyzing the ten form elements.