Tushlaba is the Hebrew

Hebrew language

Hebrew is a Semitic language of the Afroasiatic language family. Culturally, is it considered by Jews and other religious groups as the language of the Jewish people, though other Jewish languages had originated among diaspora Jews, and the Hebrew language is also used by non-Jewish groups, such...

 acronym

Acronym and initialism

Acronyms and initialisms are abbreviations formed from the initial components in a phrase or a word. These components may be individual letters or parts of words . There is no universal agreement on the precise definition of the various terms , nor on written usage...

 for תם ונשלם שבח לאל בורא עולם (Abbr. Heb.: תושלב"ע) meaning "Finished and Complete, Praise be to God, Creator of the Universe."

At the end of Jewish

Judaism

Judaism ) is the "religion, philosophy, and way of life" of the Jewish people...

works on traditional and religious subjects, it is customary for the author to express thanks to God for enabling the author of the book to complete it satisfactorily. The author's gratitude is expressed in one word, תושלב"ע, printed on the last page of text of the book.