“A woman is only for beauty; a woman is only for sons; a woman is only for a woman’s adornments,” and RASHI interprets that adornments should be bought for her to make her beautiful (Ketubot 59b).
Good days imply the ascent of the worlds, when each one ascends in degree and rises a little higher than the state he is in. This is the time when each one examines the reason for which he is taking upon himself the kingdom of heaven, who is called “a woman.”
He brings three elements here, meaning we should discern three reasons that cause one to take upon himself the burden of the kingdom of heaven:
1) Beauty: Baal HaSulam said that beauty means Hochma [wisdom], meaning that by taking upon himself the kingdom of heaven he will later be rewarded with the light of Torah. It follows that the light of Torah, called “wisdom” or “beauty,” is what causes him to take upon himself the burden of the kingdom of heaven.
2) Sons: In other words, he takes upon himself the burden of the kingdom of heaven in order to be rewarded with multiplication in the Torah. This is also called “attributing,” meaning that when he learns Torah, he wants to attribute the Torah to the Creator. This is called “attributing,” which means that through the burden of the kingdom of heaven he will have the strength to attribute the Torah to the Creator. In other words, during the study of Torah, he will have the strength, for the Torah is the names of the Creator.
Accordingly, we should interpret “A woman is only for sons,” since through the kingdom of heaven he will have the power to Lehavin [understand]—called Banim [sons]—that the Torah is the names of the Creator. But in the absence of the kingdom of heaven, it is impossible to aim while learning Torah, that the Torah is the names of the Creator.
3) For a woman’s adornments. This is as RASHI interpreted, that jewels should be bought for her to make her beautiful. Here it means that a person needs Torah and Mitzvot [commandments] so as to honor the kingdom of heaven, for Torah and Mitzvot are called “the bride’s adornments,” and by them we see that the bride is beautiful (and we should understand the difference from “Cast your eyes on beauty”).