And We appointed for Moses thirty nights: it is said that He commanded him to fast for thirty [days]. Upon completing [this] he was repelled by the aftertaste in his mouth. So he cleaned his teeth, but God reprimanded for that and commanded him to add another ten days [of fasting]. It is also said that He had commanded him to seek nearness to Him with what he will do in the thirty days [in the way of fasting] and that He then revealed the Torah to him in the last [additional] ten days, thus completing forty. The first [report] alludes to that he was rid of the veil of acts, attributes and essence during the thirty days but there remained in him a remnant whose existence he could not be rid of, and so his use of the toothbrush is an allusion to the manifestation of that remnant where he says:
