269. Kasmā ca catassovātiādi pañhassa pana idaṃ vissajjanaṃ.
Ñ(IX,107): Here are the answers to the questions beginning with 'Why are they only four?':
Kamo pavattanti ca appamāṇe,
Tā gocare yena tadappamaññā.
Ñ: Their number four is due to paths to purity
And other sets of four; their order to their aim
As welfare and the rest. Their scope is found to be
Immeasurable, so 'measureless states' their name.