Authored by Al-Husayn Al-Damghani, "Qamus al-Quran," also known as "Islah al-Wujud wa al-Nazair fi al-Quran al-Karim," is a monumental work in Islamic lexicography and Quranic studies. This Arabic-Arabic dictionary meticulously clarifies the meanings of Quranic words, exploring their linguistic nuances and identifying instances of synonyms (nazair) and homonyms (wujud) within the sacred text. It offers profound insights into the intricate vocabulary and thematic connections of the Holy Quran, serving as an indispensable resource for scholars, exegetes, and students seeking a deeper understanding of God's divine revelation and its linguistic profundity.