Ashrei

Ashrei (Hebrew: אַשְׁרֵי) is a prayer that is recited at least three times daily in Jewish prayers, twice during Shacharit (morning service) and once during Mincha (afternoon service). The prayer is composed primarily of Psalm 145 in its entirety, with Psalm 84:5 and Psalm 144:15 appended to the beginning and Psalm 115:18 to the end. The first two verses added both begin with the Hebrew word ashrei, which means 'happy is he who...', 'praiseworthy', or 'fortunate'. This gives the prayer its name.

The Talmud does not refer to the psalm by the (current) title of Ashrei, but rather as the opening words, Tehillah l'David.