大方廣佛華嚴經疏 49.19

49.19

第九摩尼利物喻，喻佛嚴剎益生身，雨寶利貧即嚴剎故。各有體用可知。

Ninth is the simile of the maṇi benefiting things, illustrating the Buddha's body that adorns kṣetras and benefits beings, because raining down treasures to benefit the poor is precisely adorning kṣetras. That each has essence and function is obvious.