Puggalapannatti 2.1.3.2

2.1.3.2

Idhekacco puggalo lābhī hoti rūpasahagatānaṃ vā arūpasahagatānaṃ vā samāpattīnaṃ.

Here a person obtains the attainments (of ecstatic trance) whether accompanied by an idea of form or by an idea of formlessness, and he does not surely obtain them as he desires, nor without difficulty, nor without toil, neither does he get into, nor get up from them where he desires, when he desires, and as long as he desires; there is this possibility that indolence coming over him should perturb those attainments. Such a person is said to be of perturbable nature.