- BB: At AN III 169-170,
4. Tikandaki sutta: At the Tikandaki forest]
this practice is discussed more fully, with reference to the benefits of each contemplation.
At DN III 112,25-13,10 [DN 28]
it is called a “spiritual power which is taintless, acquisitionless, and noble” (ayaṃ iddhi anāsavā anupadhikā ariyā), and Paṭis II 212-13 calls it “the noble ones’ spiritual power” (ariyiddhi); further explanation is given at Vism 381-82 (Ppn 12:36-38).
Visuddhimagga is here:
http://www.accesstoinsight.org/lib/auth ... index.html
The following is condensed from Spk: (i) to perceive the repulsive in the unrepulsive (appaṭikkūle paṭikkūlasaññī) one pervades an unrepulsive object (e.g., a sensually attractive person) with the idea of foulness or attends to it as impermanent; (ii) to perceive the unrepulsive in the repulsive (paṭikkūle appaṭikkūlasaññī ) one pervades a repulsive object (e.g., a hostile person) with lovingkindness or attends to it as elements; (iii) and (iv) simply extend the first two modes of perception to both types of objects conjointly; and (v) is self-explanatory.