Ibn Ezra on Leviticus 16:12

המחתה. ידועה היא: A CENSER. The meaning of machtah (censer) is known.

חפניו. שניהם: HIS HANDS FULL. Both hands.⁶⁶The word for a handful (chofnayim) always comes in the plural form. Hence I.E. points out that here the word is to be taken literally.

קטרת סמים. היא הנזכרת: SWEET INCENSE. Mentioned earlier.⁶⁷In Ex. 30:22-38.