註華嚴經題法界觀門頌 2.288

2.288

一塵稱理，豈有邊涯？此頌芥納須彌，體無邊畔。經云「毛孔容受彼諸剎，諸剎不能遍毛孔。」清涼云：「觀佛境於塵毛，此正結顯溥融無礙，是佛不可思議無盡功德矣。」

"A single dust mote matches principle— / How could it have any boundary?"
This verse refers to the mustard seed containing Mount Sumeru, its substance without boundaries. The sūtra says: "A single pore accommodates those worlds, / But those worlds cannot pervade the pore." Qingliang said: "Contemplating the Buddha's realm in dust motes and pores—this precisely concludes by revealing universal interfusion and unobstructedness, which are the Buddha's inconceivable, inexhaustible merits."