The inner point revealed by stripping the outer

וכתיב אשריכם זורעי על כל מים משלחי רגל כו'.

And it is written, "Fortunate are you who sow beside all waters, who send forth the foot of the ox and the donkey" (Yeshayahu 32:20).

The Sefas Emes brings a verse praising those who "sow beside all waters," which he will read as an allusion to the inner point of the Jew.

דכתיב אור זרוע לצדיק.

As it is written, "Light is sown for the tzaddik" (Tehillim 97:11).

A holy light is planted, like a seed, within the righteous.

ועמך כולם צדיקים.

"And your people are all tzaddikim" (Yeshayahu 60:21).

Since all of Bnei Yisrael are called tzaddikim, this sown light is present in every Jew.

ויש נקודה פנימית כנ"ל בכל איש ישראל מצד הטבע כנ"ל.

And there is an inner point, as above, in every Jew, by virtue of his nature, as above.

Every Jew carries an innate inner point of holiness, planted in him from his very essence.

רק שמתגלה אחר הסרת החיצוניות וז"ש משלחי רגל כו'.

Only that it is revealed after the removal of the outer layer (chitzoniyus), and this is the meaning of "who send forth the foot."

The inner point shines forth once the external coverings are stripped away — hinted at by "sending forth the foot," casting off the outer.

ולכן אחר ר"ה ויוהכ"פ מתגלה בחי' סוכות כנ"ל.

Therefore, after Rosh Hashanah and Yom Kippur, the aspect of Sukkos is revealed, as above.

The teshuvah and purification of the Yamim Noraim peel away the outer layers, so that the inner light of Sukkos can emerge.

ובהושענא רבה בנ"י שמחין בבחי' ערבה דוקא אף בלי טעם וריח כנ"ל:

And on Hoshana Rabbah, Bnei Yisrael rejoice specifically in the aspect of the aravah (willow), even without taste or scent, as above.

By Hoshana Rabbah the outer layers are fully removed, and Bnei Yisrael rejoice in the bare inner point — the willow that has neither taste nor scent yet holds the deepest bond.

Summary: A holy light is sown within every Jew, who is called a tzaddik, as an inner point rooted in his very essence; this point is revealed only after the outer layers are stripped away through the teshuvah of Rosh Hashanah and Yom Kippur — so that by Sukkos, and fully on Hoshana Rabbah, Bnei Yisrael rejoice in the bare inner bond symbolized by the willow.