Arabic grammar study on the poetic grammar book, by al-Qasim ibn Ali ibn Muhammad al-Hariri al-Basri (446/1054 - 516/1122). al-Hariri was an Arab poet and Arabic language scholar. This work found its way into the schools of science and continued to be a systematic book circulated among students because of its importance in the science of grammar, given the method of writing in that era. The writer demonstrated skill in good arrangement and organized systematic distribution in drafting this book.