This 10-fold group is perhaps for the first time mentioned in Khp. Com. and explained in Vis.M. III.
”obstacles”, is the term for the following things if they obstruct the monk in the strict practice of a subject of meditation: a crowded monastery, travelling, relatives, association with lay folk, gifts, pupils, repairs in the monastery, sickness, study, magical power. The latter, however, may become an obstacle only in developing insight (vipassana^, q.v.). See Vis.M. III, 29ff. - (App.)