Know that a person’s repentance and purity are not accepted unless it is absolutely clear that that person will not return to his foolishness [sins] in the future. As the Rambam explains (Hilkhot Teshuva 2:2): “What constitutes teshuva [repentance]?…[He must reach the level at which] He who knows the hidden [God] will testify concerning him that he will never return to this sin again.” It follows that if a person purifies the inanimate part of his desire to receive, he becomes worthy of the Partzuf of the Nefesh of Asiya.
He ascends and enclothes the Sefira of Malkhut of Asiya. It is certain that he becomes worthy of absolutely, permanently purifying the inanimate part, such that he will never return to his foolishness. Yet, we have spoken of other levels of Asiya – Ruaḥ, Neshama, Ḥaya, and Yeḥida. Parallel to them, he must purify the plant, animal, and human aspects of his desire to receive, such that they will enclothe and receive their lights.
This purification does not need to be absolutely permanent, such that He who knows the hidden will testify that he will not return to his foolishness.