The book Al-Bayan in the Tajweed of the Qur'an was written by Muhammad Yassawi, where this book begins the study of Tajweed with an important introduction - it is an important research that must be crossed to reach the sequential researches, then he divided the study of the alphabets into four groups, each group unites them with a specific link, and did not focus on the linguistic and idiomatic meaning of the ruling, but the attention was focused on knowing the application of the correct tajweed.