瑜伽師地論分門記 1.170

1.170

後有十二復次明諸經中所有修行要義者。第一復次明於空閑處修正定分二。一標經句。二釋經文分三。一明空閑。二明內心住正定。三明前二果利分三。一明空閑勝利。二明內心安住勝利。三明善觀勝利。

Then there are twelve 'furthermore's explaining all essential points of cultivation found across the sūtras. The first 'furthermore' explains cultivating right concentration in seclusion, divided into two: 1. presenting the sūtra phrase; 2. explaining the text of the sūtra, divided into three: (1) explaining seclusion; (2) explaining the inner mind abiding in right concentration; (3) explaining the fruits and benefits of the preceding two, divided into three: a. explaining the benefits of seclusion; b. explaining the benefits of the inner mind's abiding; c. explaining the benefits of clear observation.