Islamic Quarterly, cilt.63, sa.4, ss.523-550, 2019 (Hakemli Dergi)
Sachaqlizādah al-Mar'ashīs (1145/1732) book Juhd al-muqill appeared eight centuries after the formation of tajvveed science. This period allovved the author to take advantage of previous tajvveed books. Nevertheless, Sachaqlizādah diversified the sources of his book and made use of the early and the late grammar sources, as well as the knowledge of the philosophers which he obtained from kalam sources. The diversity of the sources made it easy to describe and classify some sound changes, which was unlike the other tajweed books that do not go beyond the field of tajweed. Besides adding some new concepts to the science of tajweed, he was able to reorganize the treatment of some topics as well. He was not a typical narrator; on the contrary, he Consolidated the narrated data by his knowledge of other scientific fields. He did well in explaining Lahn (the corruption of speech) issue and removed the ambiguity from two sets of sound attributes: Voiced-voiceless set and fricative-plosive set. He did this by using the concepts of voice and breath for the first set and the concepts of instant and duration for the second. But the most important thing that distinguishes his work and makes it appropriate to take it as a model for an educational book is his focus on studying Arabic voices in their aspects that serve the recitation principles. That's why he distinguished the concepts of qirāá and performance/adā' and also explicitly mentioned the qirāá he adopted in his applications and examples.