Shabbos as a lasting inner rest

שבת שבתון פרש"י מנוחת מרגוע ולא מנוחת עראי.

"Shabbos Shabbason" — Rashi explains: a rest of repose, not a temporary rest.

The Sefas Emes begins from Rashi's comment that the doubled "Shabbos Shabbason" denotes a true, settled rest — not something fleeting or incidental.

פי' שלא יהי' המנוחה במקרה ולשעה.

That is, the rest should not be something incidental and momentary.

The menuchah of Shabbos is meant to be more than a passing pause from work for an hour or a day.

רק שיעשה באדם רשימה נשאר לעד.

Rather, it should leave an imprint in the person that remains forever.

Shabbos should leave a lasting reshimah (impression) on the soul — an inner mark that endures even after Shabbos has passed.

ורמז שבתון שיהי' כל האדם נמשך אחר השבת שיהי' בו בעצמו בחי' השבת ושבתון פועל יוצא.

And "Shabbason" hints that the whole person should be drawn after the Shabbos, so that the aspect of Shabbos becomes part of him himself — "Shabbason" being a transitive form.

The extra word "Shabbason" teaches that a person should be so drawn after Shabbos that its quality becomes internalized within him. Read as a "poel yotzei" (transitive verb), it means Shabbos actively does something to a person.

שהשבת נותן שביתה ומנוחה לנפשות בנ"י.

For Shabbos gives rest and repose to the souls of Bnei Yisrael.

Shabbos is not merely a cessation we observe; it actively bestows menuchah upon the neshamos of Bnei Yisrael.

ועל זה כ' ה' נותן לכם השבת כו' שבו איש תחתיו.

And about this it is written: "Hashem gives you the Shabbos… let each person remain in his place (tachtav)."

The verse describing Shabbos says "let each remain in his place" — which the Sefas Emes will reread to mean "beneath" Shabbos.

פי' תחתיו של השבת.

That is, "beneath" the Shabbos.

"Tachtav" — "in his place" — is read as "beneath it," meaning a person should rest within and under the canopy of Shabbos itself, drawn into its domain.

ובאמת לזה צריכין סייעתא דשמיא להיות דבוק אל השבת שהוא קודש ולמעלה מהטבע.

And in truth, for this one needs siyata di-Shmaya (Heavenly assistance) to be attached to the Shabbos, which is holy and above nature.

Because Shabbos is kodesh and transcends the natural order, a person cannot cling to it by his own strength alone; he requires Divine help to bond with it.

וע"ז אמרו חז"ל לדעת הנותן מתנה צריך להודיעו כו'.

And about this Chazal said: "to know" — one who gives a gift must make it known to the recipient.

Chazal taught (regarding "to know that I, Hashem, sanctify you") that one who gives a gift informs the recipient. Hashem "informs" us of the gift of Shabbos so we can receive it consciously.

שהקב"ה נתן גם זה הדעת שיהיה לבנ"י דביקות במתנת השבת.

For Hashem gave this awareness as well, so that Bnei Yisrael would have deveikus (attachment) in the gift of Shabbos.

The very "knowing" — the ability to recognize and cleave to Shabbos — is itself part of the gift. Hashem grants both the present and the capacity to connect to it.

ולכן יורד נשמה יתירה שבכח זו הנשמה נוכל להתדבק בקדושת השבת:

Therefore an extra soul (neshamah yeseirah) descends, for through the power of this soul we are able to cling to the kedushah of Shabbos.

This is the purpose of the neshamah yeseirah granted on Shabbos: it is the Heavenly assistance that empowers a Jew to attach himself to Shabbos's holiness, which is otherwise beyond natural reach.

Summary: The Sefas Emes teaches that "Shabbos Shabbason" means a deep, lasting rest that leaves an eternal imprint on the soul, drawing the whole person into the domain of Shabbos until its quality becomes part of him. Because Shabbos is holy and above nature, attaching to it requires siyata di-Shmaya — and Hashem provides this through the gift of awareness and the neshamah yeseirah, which empower Bnei Yisrael to cling to the kedushah of Shabbos.