A simplified commentary of the epistle of jurisprudence composed by the sheikh El-Islam of his time, in this case the sheikh 'Abdul-Wâhid-Ibn 'Ashir with his famous poem known as the epistle of ibn 'Achir or what is called "The guide who assists in the essentials of the sciences of religion", while dealing with all the evidence related to his jurisdictional matters, in the hope that they will help students of sciences Islamic beginners.