Islamic concepts

Aḥad — one and unique; a single one; indivisible

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“The epithets aḥad and wāḥid are both applied to Allah which are normally translated as ‘One’ but the word aḥad includes an additional sense which signifies that Allah is beyond composition, plurality and resemblance, which means that He is neither composed of any elements, nor does He have any partner, nor has He any resemblance to anything.” (Maʿāriful Qurʾān, p. 915)

tawḥīd unity, oneness