瑜伽論記 18.270

18.270

基云：謂器世界業如本地第三，或感一劫等，造此業時，由三性作意為方便引此業生起，能牽器世間諸法令住不絕，如山河等名共業生，田宅等不共業生。

Ji states: this refers to the karma of the receptacle world, as in the Maulī Bhūmiḥ, fascicle three, which may be undergone for an aeon, etc. When creating this karma, using attention of the three natures as an expedient means induces this karma to arise, which can draw out the dharmas of the receptacle world to abide without interruption; things like mountains and rivers are called produced by shared karma, while fields and houses are produced by unshared karma.