The table below presents an aligned extract of verses in Ex27-20b, Lv24-02, Ex29-40, Nu28-05 All verses discuss Temple items requiring oil The alignment justifies the Rashi assertions that The oil used for light was of a higher quality without dregs. The oil used for Minchah offerings could be of lower quality.

Verse	Text of Verse	Rashi comment
Ex27-20	And you shall command the people of Israel, that they bring you pure oil beaten for the light, for the lamp to burn always.	Candellabrah oil is not only beaten but beaten for the light and clear. It must be of higher quality.
Ex29-40	And with the one lamb a tenth deal of flour mixed with the fourth part of a hin of beaten oil; and the fourth part of a hin of wine for a drink offering.	It was permissable that the oil used in the Minchah offerings could be of lower quality - it had to be beaten but not clear (i.e. it could have dregs).

Advanced Rashi: The verses by themselves only justify the assertion that oil used for the candellabrah was of higher quality while oil used for other items could be of lower quality. The specifics of how higher and lower quality is achieved is not mentioned. However Rashi cites the Talmud Menachoth 86a which describes a 3-stage production process.
• First the olives were beaten and placed in (or around) a basket until the weight of the oil inside them dripped out. (This oil had no dregs and was used for light)
• Then the olives were placed under a heavy beam to squeeze out remaining oil (This oil has dregs and could not be used for light)
• Finally the olives were finely ground (to ooze out the last oil). This oil also has dregs and could not be used for the Candellabrah.
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More advanced Rashi: We have aligned above only Ex27-20b and Ex29-40. An almost identical alignment is found in verses Lv24-02 and Nu28-05.