Intertextuality is a technique that has been widely used in contemporary Arabic poetry. Critics have developed various definitions of the application and its importance. Looking at the definitions of this concept by Western critics such as Roland Barth and Julia Kristeva, and Arab critics such as Abd al-Malik Murtāḍ, Muhammad Azzam, Muhammad Miftah, Abdullah al-Ghathami, and Khalil Mossa, we can say that they considered the concept as a methodological and structural phenomenon. However, this phenomenon has a practical function in the target text in contemporary Arabic poetry, in addition to its structural function. Therefore, the authors of this study have sought to emphasize the practicality of intertextuality, rather than only seeing its structural role, by studying Qur’anic intertextuality in Muhammad al-Qaisi’s poems using a descriptive-analytic method. The research concludes that the poet consciously employed Qur’anic words or verses to direct the reader to the Quran and thereby validate their claims. Thus, by reversing the relationship and using the Qur’anic verses in a contradictory sense, such as images showing hope within an atmosphere of frustration and despair, he illustrates the depth of the disaster. On the other hand, using the verses that represent the awakening, the warning, and the condemnation of the oppressors and the unbelievers, he tries to wake up the Palestinians and other Arab nations, describing their enemies and condemning them. So it can be said that the poet has used the intertextuality technique in four main directions: creating a revers relationship and using Qur’anic images in a contradictory sense, using Qur’anic images expressing dead incitation, using Qur’anic images to describe the oppressors and unbelievers, and using Qur’anic images which reflect awakening and preaching to arouse the Palestinian nation and other Arab nations.