Three Spheres. renunciation, study and work. the three wheels, the three cycles of the Buddha teaching. 1) {klog pa thos bsam gyi 'khor lo} the study wheel of study, learning. 2) {spong ba bsam gtan gyi 'khor lo} the renunciation wheel of contemplation, meditation. 3) {bya ba las kyi 'khor lo} the action wheel of dharmic activity, practical conduct. Three Spheres of a teacher's activity. Those of exegesis {bshad pa}, attainment {sgrub pa} and work {las}, or alternatively of renunciation, study, and work