Al-Sayf al-Saqil fi al-Radd ala Ibn Zafil
Al-Sayf al-Saqil fi al-Radd 'ala Ibn Zafil (Arabic: السيف الصقيل في الرد على ابن زفيل, lit. 'The Burnished Sword in Refuting Ibn Zafil [derogatory name for Ibn al-Qayyim]'), is a theological book, written by the Shafi'i-Ash'ari scholar Taqi al-Din al-Subki (d. 756/1355), as a refutation against Ibn al-Qayyim's poem entitled al-Kafiya al-Shafiya fi al-Intisar lil-Firqa al-Najiya (Arabic: الكافية الشافية في الانتصار للفرقة الناجية, lit. 'The Sufficient and Healing [Poem] on the Victory of the Saved Sect'), known popularly as al-Qasida al-Nuniyya (Arabic: القصيدة النونية, lit. 'Ode Rhyming in the Letter Nun [N]').
Source: Wikipedia — Al-Sayf al-Saqil fi al-Radd ala Ibn Zafil (CC BY-SA 4.0)