瑜伽師地論分門記 6.173

6.173

分三十中第二十四明諸蘊有學義分二。一總問分二如論。二廣答分二。一答有學自性。二答其數。

Within the thirty divisions, the twenty-fourth, explaining the meaning of "under training" regarding the skandhas, has two parts: 1. a general inquiry, having two parts as in the treatise; 2. a detailed answer, having two parts: (1) answering [regarding] the svabhāva of being under training, (2) answering [regarding] their number.