('wise'): 32, 42, 44, 45, 52–55, 74, 78, 88, 89, and 142. Psalm 41:2, although not in the above list, has the description ashrei maskil. Six Psalms (16, 56–60) have the title michtam (, 'gold'). Rashi suggests that michtam refers to an item that a person carries with him at all times, hence, these Psalms contain concepts or ideas that are pertinent at every stage and setting throughout life, deemed vital as part of day-to-day spiritual awareness. Psalm 7 (along with Habakkuk chapter 3) bears the title shigayon (). There are three interpretations: (a) According to Rashi and others, this term stems from the root shegaga, meaning "mistake"—David committed some sin and is singing in the form of a prayer to redeem himself from it; (b) shigayon was a type of musical instrument; (c) Ibn Ezra considers the word to mean "longing", as for example in the verse in Proverbs 5:19 tishge tamid. Psalms are used throughout traditional Jewish worship. Many complete Psalms and verses from Psalms appear in the morning services (Shacharit). The pesukei dezimra component incorporates Psalms 30, 100 and 145–150. Psalm 145 (commonly referred to as "Ashrei", which is really the first word of two verses appended to the beginning of the Psalm), is read three times every day: once in shacharit as part of pesukei dezimrah, as mentioned, once, along with Psalm 20, as part of the morning's concluding prayers, and once at the start of the afternoon service. On Festival days and Sabbaths, instead of concluding the morning service, it precedes the Mussaf service. Psalms 95–99, 29, 92, and 93, along with some later readings, comprise the introduction (Kabbalat Shabbat) to the Friday night service. Traditionally, a different "Psalm for the Day"—Shir shel yom—is read after the morning service each day of the week (starting Sunday, Psalms: 24, 48, 82, 94, 81, 93, 92). This is described in the Mishnah (the initial codification of the Jewish oral tradition) in the tractate Tamid. According to the Talmud, these daily Psalms were originally recited on that day of the week by the Levites in the Temple in Jerusalem. From Rosh Chodesh Elul until Hoshanah Rabbah, Psalm 27 is recited twice daily following the morning and evening services. There is a Minhag (custom) to recite Psalm 30 each morning of Chanukkah after Shacharit: some recite this in place of the regular "Psalm for the Day", others recite this