Search for "Alfiyah Ibnu Malik – Arabic Only." The San Francisco-based archive hosts multiple versions. Look for uploads by users "TraditionalHikma" or "DigitalMaktaba." Filter by "Text PDF" to avoid scanned images.
The book, also known as "Al-Alfiyyah" or "Thousand Questions on Grammar", is a comprehensive treatise on Arabic grammar, consisting of 1,000 verses (couplets) that cover various aspects of the language. It is considered one of the most important and influential works on Arabic grammar. Kitab Alfiyah Ibnu Malik.pdf
While there are hundreds of grammar books, the Alfiyah sits at the top for three reasons: Search for "Alfiyah Ibnu Malik – Arabic Only