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Oath (Qasam) in the Quran — Types and Rhetorical Purposes

terms Level: intermediate lughawi trm-034
وَٱلشَّمۡسِ وَضُحَىٰهَا ۝ وَٱلۡقَمَرِ إِذَا تَلَىٰهَا
— الشمس 1
Definition:
An oath (Qasam) affirms a statement by invoking something venerable — Allah swears by many things in the Quran with profound wisdom, not out of need.

Three Components:
  1. Oath particle: Waw, Ba, Ta — "By the sun and its brightness."
  2. Object of oath (Muqsam bihi): Allah or His creations that point to Him.
  3. Response (Jawab al-Qasam): The affirmed matter.
Rhetorical Purposes:
  • Affirming the truth of a statement to the denier or doubter.
  • Magnifying the importance of the object sworn by and alerting the addressee.
  • Magnifying the subject sworn upon and establishing its gravity.
Note: Allah does not swear by His creation out of reverence for it — but to alert minds to His signs within it.
Source: Ibn al-Qayyim, Al-Tibyan fi Aqsam al-Quran; Al-Zarkashi, Al-Burhan (3/25)
Question: What are the three components of a Quranic oath, and what is its rhetorical purpose?
Answer: Oath particle, object sworn by, and the response — purpose: affirming truth and magnifying both the object and subject of the oath.
Printed from quran.zayenha.com — 9/10/2026