Explanation of the system: “Al-Mufid in Tajweed” by Imam al-Taybi. This book is an explanation of the useful system in intonation by Imam Ahmad al-Taybi - may God have mercy on him - presented to the people of the Qur’an who are engaged in Qur’anic studies. That it is like a complement to the al-Jazari system, as its regulator touched on intonation research that the astute reader cannot do without, and Imam Ibn al-Jaziri did not address it in his system: the introduction, such as the number of alphabets, the reality of alphabets and letters, and their completion, as well as their sub-letters and letters. It was distinguished by the ease of its words and the clarity of its meanings, so it is really easy to refrain, so that many authors in intonation after Imam al-Tayyibi copied it from it, but its student does not find it fully realized, in addition to the QR code symbols that display the sections of the letters on the outside of the letters. illustrated, in order to benefit the largest segment of the students of Tajweed book God.