1. Upakkilesa Sutta.– Taught at Pācīnavaṃsadāya to Anuruddha, Nandiya, and Kimbila. It was at the time of the quarrel of the Kosambī monks; the Buddha, in search of quietness, goes to Bālakaloṇakārāma, teaches there to Bhagu and proceeds to Pācīnavaṃsadāya, where he tells his cousins how they should develop meditation, getting rid of all obstacles. M.iii.152 ﬀ. The verses of the sutta are also found in the Vinaya version (i.349 ﬀ). Some of the verses are included in the Dhammapada (vv.328‑30) and in the Khaggavisāṇa Sutta of the Suttanipāta (vv.11, 12).
Due to five impurities, the mind is not malleable, does not shine, and not concentrated for the destruction of the corruptions. What five? Corrupted by sensual desire, ill-
3. Upakkilesa Sutta.– Four things prevent the sun and the moon from shining with their full brilliance — clouds, mist, smoke or dust, and Rāhu (eclipse).
Similarly four things diminish the holiness of ascetics and recluses — intoxicants, sexual relations, money, and wrong livelihood (A.ii.53 f).
4. Upakkilesa Sutta.– The same as (2) above, adding that with the mind thus purified it becomes malleable and if one wishes one is able to attain higher knowledge (abhiññā) such as the psychic powers, and finally, the destruction of the corruptions. (A.iii.16‑19).