四分律刪繁補闕行事鈔 3.239

3.239

Ninth, sitting under a tree: The Mahāprajñāpāramitopadeśa states: "Contemplating under a tree: when the Buddha was born, attained enlightenment, turned the Dharma wheel, and entered parinirvāṇa, all occurred under a tree; the practitioner accords with the ways of all Buddhas and constantly dwells under a tree." The treatise states: "Delighting in not staying under a roof has ten benefits: namely, having no weariness and suffering regarding rooms, bedding, cherished items, or personal belongings, and according with the four resources, being easy to obtain without fault, and having no crowd disturbances, and so forth."