Siman 443 סימן 443 Source: https://ajew.org/reader/chayey-moharan/1/The Virtue of Hisbodidus — Secluded Personal Prayer Segment 1 HE: לִי EN: (7.) And I heard in the name of Rabbainu o.b.m. that he said this also to several other people: "Since your body is very thick, fierce, and strong etc. — therefore you must stuff it much" [in Yiddish: "darft ihr ihm asach on dulen"] — with holy words regarding the ultimate purpose — as mentioned above. And it is thereby understood that one must also speak with oneself many words regarding strengthening — to strengthen one's soul — so that one's hands should not fall completely slack, G-d forbid. And as it is cited in the songs and rhymes of Rabbainu z"l, and in many places in his words. And as we say every day in the morning prayer: "What are we, what is our life" etc. — "except for the soul" etc. — "but we are Your people" etc. — "Praiseworthy are we" etc. — as cited in his words in Likutay Tinyana, Torah 125, see there.