Sunnah

Sunnah (Arabic: al-Sunnah, "the trodden path" or "established practice") denotes the body of normative precedent established by the Prophet Muḥammad through his sayings (qawl), actions (fiʿl), and tacit approvals (taqrīr). In uṣūl al-fiqh (Islamic legal theory) it ranks as the second primary source (aṣl) of the Sharīʿah after the Qurʾān, and is regarded by all Sunni and Shia schools as divinely sanctioned revelation in meaning, conveyed through the Prophet's conduct. Its authority is grounded in explicit Qurʾānic injunctions such as Sūrah al-Ḥashr 59:7 ("whatever the Messenger gives you, take it") and Sūrah al-Nisāʾ 4:80 ("whoever obeys the Messenger has obeyed Allah"), which classical jurists including al-Shāfiʿī (d. 820), in his al-Risāla, cited to establish the Sunnah as a binding source of legislation alongside the revealed text.

The Sunnah is transmitted and preserved through Ḥadīth—reports comprising a chain of transmitters (isnād) and a textual content (matn). Scholars distinguish between the Sunnah (the Prophet's normative practice itself) and Ḥadīth (the literary record reporting it). Functionally, the Sunnah operates in three relations to the Qurʾān, as systematised by al-Shāfiʿī: it confirms a Qurʾānic ruling (e.g. prohibition of theft), clarifies and details it (the Qurʾān commands ṣalāh but the Sunnah specifies its rakʿahs and timings), or establishes an independent ruling not found in the text (e.g. the prohibition on marrying a woman and her paternal aunt simultaneously). Authenticity is graded by classical muḥaddithūn into ṣaḥīḥ (sound), ḥasan (good), and ḍaʿīf (weak), with the canonical Sunni collections being the Ṣaḥīḥ of al-Bukhārī (d. 870), Ṣaḥīḥ Muslim (d. 875), and the four Sunan of Abū Dāwūd, al-Tirmidhī, al-Nasāʾī, and Ibn Mājah—together the Kutub al-Sittah.

In Shia jurisprudence the Sunnah extends to the authoritative teachings of the twelve Imāms, preserved in collections such as al-Kulaynī's al-Kāfī (10th century). The Sunnah supplies the raw material for ijtihād, qiyās (analogical reasoning), and ijmāʿ (consensus), and remains foundational in contemporary Islamic legislation, family law codes across the Muslim world, and the constitutional clauses—such as Article 227 of the Constitution of Pakistan—requiring laws to conform to the Qurʾān and Sunnah. As of 2026 it continues to govern the work of bodies like Pakistan's Council of Islamic Ideology and the Federal Shariat Court.

For the CSS Islamic Studies paper, the Sunnah is a high-frequency topic tested both in compulsory short notes and full-length essays. Candidates should master its definition, its threefold classification (qawl, fiʿl, taqrīr), its evidentiary basis from named Qurʾānic verses, its relationship to the Qurʾān per al-Shāfiʿī's typology, and the distinction between Sunnah and Ḥadīth. Questions frequently ask candidates to prove the legislative authority of the Sunnah or to discuss its role as a source of law—answers must cite specific verses, named scholars, and the canonical Ḥadīth collections to score in the upper band.