金光明最勝王經疏 2.35

2.35

贊曰：三、變寶座，有四：一座體，座四者，表四生類皆得成佛，故以四寶成，如師子王之所處故。言四寶者，一金、二銀、三吠琉璃、四頗胝迦，表四無畏故。以天寶衣等者，二明敷設，表其淨命。復於此座等三莊嚴，表出生死，得七覺華。珍寶為飾，亦七聖財之所嚴故。四坐量，寶座稱身，故量等如來。不由妙幢之力，故云自然顯現。

Commentary: 3. Transforming the jewelled thrones has four parts: 1. The substance of the thrones: that the thrones are four represents that the four kinds of born beings can all attain Buddhahood; thus they are made of four jewels, just as is the place where the lion king resides. The 'four jewels' are: first, gold; second, silver; third, vaiḍūrya; fourth, sphaṭika; representing the four fearlessnesses. 'Over which were spread celestial jewelled garments and so on': second, clarifying the furnishings, representing their pure livelihood. 'Furthermore, upon these thrones and so on': third, the adornments, representing departing from saṃsāra and attaining the seven flowers of awakening. Being adorned with precious gems also represents being adorned by the seven noble treasures. 4. The measure of the thrones: the jewelled thrones match the bodies, hence they are 'equal in measure to the Tathāgatas'. Because it was not through the power of Ruciraketu, it says 'spontaneously appeared'.