1. Samatta Sutta.– Sāriputta tells Anuruddha that it is by cultivating the four foundations of mindfulness that one becomes an adept (asekha). S.v.175.
2. Samatta Sutta.– It is by practising the four bases of success (iddhipāda) that recluses and brahmins can perfectly develop psychic powers. S.v.256.