Rhetorical and Linguistic Excellence

Al-Baydawi's principal contribution to tafsir methodology, following in the footsteps of az-Zamakhshari's Al-Kashshaf, was the systematic application of Arabic rhetoric (balagha) to Quranic interpretation. His analysis of the Quran's rhetorical features — its metaphors, its rhetorical questions, its chiastic structures, its transitions between narrative and direct address — became foundational for the tradition of bayan-based Quranic commentary.

The three main disciplines of classical Arabic rhetoric — bayan (clarity and figurative language), ma'ani (meaning and sentence structure), and badi' (ornamental figures of speech) — all appear in al-Baydawi's analysis. For each passage, he notes the specific rhetorical device at work and explains how it contributes to the verse's communicative impact. This attention to how the Quran achieves its effects, not merely what it means, represented a significant development in Quranic studies.

For example, when treating the Quranic narratives of the prophets in Surah al-Baqarah and Surah al-A'raf, al-Baydawi notes the deliberate compression and allusion that characterizes the Quranic narrative style — how events familiar to the first audience are referenced rather than narrated in full, creating an economy of expression that later elaboration (tafsil) must supplement. He identifies the rhetorical purposes served by this compression: emphasis, acceleration of narrative pace, and the invitation to reflection.

His analysis of Quranic oaths (aqsam) — the solemn oaths by the sun, moon, fig, olive, and other created realities that open several shorter surahs — applies rhetorical theory to explain the function of the oath form, the significance of what is sworn by, and the relationship between the oath and the answer (jawab al-qasam) that follows.

The supercommentary tradition that grew up around Anwar at-Tanzil largely took the form of detailed expansions of al-Baydawi's rhetorical observations, showing how subsequent scholars built on his analysis to develop ever more refined accounts of the Quran's literary dimensions.