What is tawheed?
Short answer: Tawheed is singling out Allah alone: in His lordship, in worship, and in His names and attributes.
Tawheed is the foundation of Islam and the message of every prophet: “We sent no messenger before you except that We revealed to him that there is no god but Me, so worship Me” (al-Anbiya’ 21:25). Scholars explain it in three parts:
- Tawheed ar-Rububiyyah – Allah alone creates, owns and controls everything.
- Tawheed al-Uluhiyyah – all worship (prayer, dua, sacrifice, vows, reliance) is for Allah alone.
- Tawheed al-Asma’ was-Sifat – affirming Allah’s names and attributes as they came in the Quran and Sunnah.
Its opposite is shirk, the only sin Allah does not forgive if a person dies upon it (an-Nisa’ 4:48).
Answered according to the Quran and authentic Sunnah as explained by the scholars of Ahl al-Sunnah wal-Jama‘ah. For your own situation, ask a trusted scholar.
