As-Suyuti's Completion: The Final Third

When Jalal ad-Din as-Suyuti undertook to complete the tafsir that al-Mahalli had left unfinished, he faced a challenge that any scholar would approach with some trepidation: producing a continuation that was indistinguishable in style, depth, and quality from a distinguished predecessor's work. By general scholarly consensus, as-Suyuti succeeded in this task to a remarkable degree — the completed Tafsir al-Jalalayn reads as a unified work, not as an original followed by a supplement.

As-Suyuti's portion consists of the commentary on Surah al-Fatiha — which al-Mahalli had left completely unwritten — and, according to the most commonly accepted account, the section from Surah al-Isra (chapter 17) through Surah al-Nas (chapter 114). Al-Mahalli had worked from al-Kahf (chapter 18) through the end of the Quran and then back through al-Baqarah before his death, leaving al-Fatiha and the first seventeen chapters unaddressed. Other accounts have slightly different divisions, and some attribute a portion of Surah al-Baqarah as well to as-Suyuti, but the broad outlines are agreed upon.

As-Suyuti wrote his portion quickly — his commentary on al-Fatiha alone was reportedly completed in a single session — but speed did not produce carelessness. He had spent decades immersed in Quranic and hadith sciences, and al-Mahalli's style was so well-established and so well-known in Egyptian scholarly circles that as-Suyuti had a clear template to follow. The concise glossing of key words, the functional grammatical observations, the citation of variant readings where relevant, the avoidance of extended scholarly debate — all these features of al-Mahalli's approach were reproduced faithfully in as-Suyuti's continuation.

Scholars who have studied both portions carefully do identify some subtle differences. As-Suyuti occasionally introduces a hadith reference or a brief note of scholarly attribution that al-Mahalli's more purely grammatical approach would not have included, reflecting as-Suyuti's particular strength in hadith sciences. His commentary sometimes shows a slightly more explicit theological framing on matters of creed, consistent with the Ash'ari orientation he shared with al-Mahalli but expressed with his own characteristic directness.

The completion of al-Jalalayn was not as-Suyuti's only contribution to the tafsir tradition. He also wrote al-Itqan fi Ulum al-Quran, the most comprehensive classical encyclopedia of the Quranic sciences, and al-Durr al-Manthur, a vast collection of transmitted commentary on each verse organized without editorial selection. These works complement al-Jalalayn: where al-Jalalayn gives the clear, settled meaning, al-Itqan provides the methodological framework for how that meaning is established, and al-Durr al-Manthur preserves the full transmitted record from which al-Jalalayn's conclusions were drawn.

As-Suyuti's completion of al-Jalalayn thus represents not a compromise but a genuine collaboration across time — a younger scholar honoring a predecessor's vision by continuing it faithfully, producing a finished work greater than either scholar could have produced alone in the manner the tafsir finally took. The result has outlasted virtually everything else either scholar wrote in terms of daily readership across the Islamic world.