This is the translation of the book "Forty Hadith - text and explanation" by the Imam Abu Bakr Muhammad ibn Al-Husayn Al-Ajurri. In the book Al-Ajurri mentions forty ahadith that every Muslim must know and can benefit from in his religion. The tahqiq and commentary is the one of Shaykh 'Adil Alu Hamdan who as usual includes beneficial additions and explanations in the footnotes.