Translates to ‘People of the Household.’ In Islam, this phrase refers to the household of Prophet Muḥammad (ṣ).

Most commonly, its meaning is confined to the Maʿsūmin (infallibles) – including Prophet Muḥhammad’s daughter Fāṭimah azl-Zahra, her husband ʿAlī ibn Abi Talib, their two sons, Ḥasan ibn ʿAlī and Ḥusayn ibn ʿAlī, and the nine Imāms from the progeny of Ḥusayn ibn ʿAlī which include: ʿAlī ibn Ḥusayn, Muḥammad ibn ʿAlī, Jafar ibn Muḥammad, Musa ibn Jafar, ʿAlī ibn Musa, Muḥammad ibn ʿAlī, ʿAlī ibn Muḥammad, Ḥasan ibn ʿAlī, and al-Ḥujjah ibn al-Ḥasan al-Mahdi. 

This phrase appears in the Qurʾān in verse 33 of Chapter 33, Sūrah al- Ahzāb, which is known as the ‘Verse of Purification’ (āyahal-Taṭhīr).