諸經要集 4.116

4.116

又三千威儀云。然燈有五事。一當持淨巾拭中外令淨。二當作淨炷。三當自作麻油。四著膏不得令滿。亦不得令少。五當護令堅。莫懸妨人道。

Furthermore, the Sanqian weiyi (Three Thousand Rules of Deportment) says: In lighting a lamp there are five matters: first, one should hold a clean cloth and wipe the inside and outside to make it clean; second, one should make a clean wick; third, one should prepare sesame oil oneself; fourth, in adding the oil, one must not let it be full, nor let it be too little; fifth, one should protect it to make it secure, and do not hang it where it obstructs the paths of people.