俱舍論頌疏論本 2.107

2.107

Together with the twelve internal dhātus: the five dhātus of the eye and so on and the seven mind dhātus are called twelve. Not only is one portion of the dharmadhātu an indriya, but together with it, the twelve internal dhātus are the substance of indriyas. The five dhātus of the eye and so on comprise the five indriyas of the eye and so on, while the seven mind dhātus comprise the mind indriya. The manodhātu and manovijñānadhātu comprise one portion of the last three untainted indriyas. 'One portion' means that the three untainted indriyas have nine indriyas as their substance; among these nine indriyas, they comprise only the mind indriya, hence it is said 'one portion'. The female indriya and the male indriya are comprised within one portion of the body indriya, as will be distinguished later. By implication, the remaining five dhātus of rūpa and so on, as well as one portion of the dharmadhātu, are all in substance not indriyas.