פּירוש אויף במדבר 17:3

החטאים האלא בנפשתם THESE SINNERS AGAINST THEIR OWN SOULS — i.e. who became wilful transgressors against their own souls, because they rebelled against the Holy One, blessed be He.

כי הקריבום לפני ה' ויקדשו, they had become sanctified as vessels used for service for the Lord except if used of unauthorised service. This fact qualified these copper pans to be used as an overlay on the copper altar.

החטאים האלה בנפשתם, "of these sinners who sinned at the cost of their souls." The reason the Torah repeats this may have been so that Aaron and Moses would not feel badly at having been involved in causing the deaths of these people. The Israelites should also not attribute the death of Korach and associates to any fault on the part of Moses or Aaron. The Torah therefore emphasises that not Moses and Aaron but solely these sinners themselves were to blame for what happened to them. In spite of all this, the Israelites did not understand G'd's intention and accused Moses and Aaron of being the cause of the death of these people (17,6).

רקעי means beaten out (flattened).