Deuteronomy 32:50

כאשר מת אהרן אחיך [AND DIE] … AS AARON THY BROTHER DIED — i.e., and die by that death which you witnessed and for which you longed. For Moses stripped Aaron (before the latter’s death) of his first (i.e., the upper) garment, similarly the second, and similarly the third, and attired Elazar with them, and thus he (Aaron) beheld his son in his new dignity. Moses then said to him, “Aaron, my brother, ascend the bier”, and he ascended; — “Stretch out your hand”, and he stretched it out; — “Stretch out your leg”, and he stretched it out; “Close your eyes”, and he closed them; — “Close your mouth”, and he closed it, and thus did he pass away! Thereupon Moses said, “Happy is he who will die a death like this!” (Sifrei Devarim 339:3; cf. Rashi on Numbers 20:26).

וּמֻ֗ת בָּהָר֙ אֲשֶׁ֤ר אַתָּה֙ עֹלֶ֣ה שָׁ֔מָּה וְהֵאָסֵ֖ף אֶל־עַמֶּ֑יךָ כַּֽאֲשֶׁר־מֵ֞ת אַהֲרֹ֤ן אָחִ֙יךָ֙ בְּהֹ֣ר הָהָ֔ר וַיֵּאָ֖סֶף אֶל־עַמָּֽיו׃

and die in the mount into which thou goest up, and be gathered to thy people; as Aharon thy brother died in mount Hor, and was gathered to his people: