Quoting Commentary for Song of Songs 7:3

on shushan eduth, a michtam of David, to teach (Addendum: Michtam is an expression of (Song 5: 11), “as finest gold (כתם פז),” a coveted thing. Our Sages, however, expounded this as referring to David, who behaved as a humble (מך) and innocent man, even when he occupied the throne. Another Aggadah explains that his wound (מכתו) was perfect (תמה), i.e., he was born circumcised (Sotah 10b). Michtam of David concerning the testimony of the Sanhedrin, who were compared to a rose (שושן), as it is stated (Song 7:3): “Your navel is like a round basin, etc., fenced in with roses,” when he required that they teach him what to do. When he fought with Aram Naharaim and sent Joab against them, they said to Joab, “Aren’t you of the sons of Jacob? Where is the oath that he swore to Laban, ‘this pile is a witness’” (Gen. 31:52)? And he did not know what to answer. He came to David and said to David, “This is what the Arameans said to me.” They went and asked the Sanhedrin, [who] replied to them, “Did they not transgress the oath first, as it is stated (Num. 23:7): ‘From Aram has Balak king of Moab brought me’? Moreover, Cushan-Rishathaim was an Aramean.”

כחצי גורן עגולה כדי שיהו רואים זה את זה – As Scripture states (Song of Songs 7:3): “Your navel is like a round goblet…” [The words] "שררך אגן"/”your navel is like” – refers to the Sanhedrin which sits in the navel of the world and defends the entire world, and it is similar to a goblet, as they sit in a circle like a half-moon. The Aramaic translation of ירח/moon is סיהרא /moonlight. But in a complete circle they do not sit because the litigants and the witnesses need to enter and to speak in the presence of everyone.

your navel Heb. שָּׁרֵך, like שָּׁרְרֵך.

and they gave many stacks עֲרֵמוֹת עֲרֵמוֹת (houffen, Middle High German, heaps), an example is (Song 7:3): “a stack of (עֲרֵמַת) wheat.”

It shall be healing for your navel Heb. לשרך. The wisdom shall be healing. שרך is like (Song 7:4): שררך, which means, your navel.

נערמו מים THE WATERS WERE HEAPED UP — Onkelos translated this in the sense of ערמימות, subtlety (the waters showed themselves clever); (cf. ערום Genesis 3:1); but it is more in accordance with the elegance of Biblical style to take it as the noun of the same root as in (Song 7:3) “a stack of (ערמת) wheat”, and the following words, “the floods placed themselves like a mound”, prove that this is so (cf. Mekhilta). נערמו — Through the burning heat of the breath that issued from thy nostrils (וברוח אפיך) the waters were dried up and they became like heaps and piles of gain-stacks (ערמה) which are high.

Like a golden earring and jewelry of finest gold A collection of golden jewelry, as in (Hos. 2: 15): “and adorned herself with her earrings and her jewelry (וחליתה),” and like (Song 7:3): “jewels (חלאים).”