Musar su Salmi 40:10

One who has time should also recite the following verses, each of which alludes to a different limb: “And as for You, Hashem, You shield me, my soul, and lift up my head (Tehillim 3:4). “I proclaim righteousness among a large congregation, behold I will not refrain my lips; You know this, Hashem” (Tehillim 40:10). I called to Him with my mouth and exaltation was beneath my tongue” (ibid., 66:17). “Hashem’s instructions are upright, causing the heart to rejoice; Hashem’s commandments are pure, illuminating the eyes” (ibid., 19:9). “Hear the sound of my supplication when I cry out to You, when I lift up my hands towards Your holy sanctuary” (ibid., 28:2). “To do Your will, my God, was my desire, and Your Torah was within my intestines” (ibid., 40:9). “All my bones will declare, Hashem, “Who is like You?’ ” (ibid., 35:10). “I will bless Hashem who advised me, even at night my kidneys rebuke me” (ibid., 16:7). My foot stood upon a plain, among congregations I will bless Hashem” (ibid., 26:12). Afterwards let him recite this Mishnah encompassing the entire body from top to bottom: One may only stand to pray in a spirit of weighty- headedness [i.e., solemnity]. The pious of earlier times would pause for an hour before praying in order to direct their hearts towards the Omnipresent One. Even if the king asks after his welfare and even if a snake is wrapped around his heel he must not interrupt. Afterwards let him say the verse, “The end of the matter when everything is heard is to fear God and keep His commandments, for that is the entirety of a man” (Koheles 12:13). This verse alludes to the observance of all 613 commandments. Whoever conducts himself in this manner will enjoy good fortune, selah.