וְהָיָ֡ה בְּהָנִ֣יחַ יְהוָ֣ה אֱלֹהֶ֣יךָ ׀ לְ֠ךָ מִכָּל־אֹ֨יְבֶ֜יךָ מִסָּבִ֗יב בָּאָ֙רֶץ֙ אֲשֶׁ֣ר יְהוָֽה־אֱ֠לֹהֶיךָ נֹתֵ֨ן לְךָ֤ נַחֲלָה֙ לְרִשְׁתָּ֔הּ תִּמְחֶה֙ אֶת־זֵ֣כֶר עֲמָלֵ֔ק מִתַּ֖חַת הַשָּׁמָ֑יִם לֹ֖א תִּשְׁכָּֽח׃ (פ)
Perciò sarà, quando l'Eterno, il tuo DIO, ti avrà dato riposo da tutti i tuoi nemici intorno, nella terra che l'Eterno, il tuo DIO, ti darà in eredità per possederla, che tu cancellerai il ricordo di Amalek da sotto il cielo ; non dimenticherai.
Zohar
So the letter Vav came down together with (Moshe to) guard him, so he does not perish among them, because according to the secret of reincarnation, he was destined to mingle among the mixed multitude in exile, whose souls originated from the aspect of those of whom it is written: "For the heavens shall vanish away like smoke" (Isaiah 51:6). These are the ones for whom Noah did not plea for mercy. About them, it is written: "They were destroyed from the earth" (Beresheet 7:23), because they came from those of whom it is said, "You shall blot out the remembrance of Amalek" (Devarim 25:19). Moses did not protect himself from them and dropped the (small) Hei among them. For this reason, he shall not enter the land of Yisrael until he brings the Hei back to its place. This is also why he fell from his grade, and the letter Vav descended with him. Because of this, the letter Hei fell down and the letter Vav of Moses shall raise it up.
Zohar
And because of the "erev rav" [mixed multitude] Israel was exiled, since it is written "And Adam was expelled". Adam is obviously Israel. And Moshe, because of them, was expelled from his place and did not merit to go up to the land of Israel. And because of them he transgressed the order of the Holy One of Blessing and hit the rock, that he struck it and did not speak to it, "you shall speak to the rock" - and they caused it. And with all this, the good thought of the Holy One of Blessing was combined into deed, that he (Moshe) did not receive them and give them the sign of circumcision were it not to cover the nakedness of his father. And the Holy One of Blessing said to him: "I will make from you a people, greater and more powerful than them" (Numbers 14:12). And because of them God said "whoever sinned against Me - I will erase from My book" (Exodus 22:23), since they are from the seed of Amalek, about whom it is written "erase the seed of Amalek" (Deuteronomy 25:19). And they too caused the breaking of the two tablets of Torah.