The Quranic verse 21:30 presents a profound statement on the origin of the universe, describing the heavens and the earth as initially being a single, 'joined entity' (ratqan) before being 'separated' (fataqna) by the command of Allah. This verse has been a subject of deep contemplation throughout Islamic history. Classical exegetes, such as Ibn Kathir and Al-Tabari, predominantly interpreted this 'separation' as the divine act of making the sky rain and the earth produce vegetation, thus enabling life, which is contextually supported by the subsequent phrase, 'and We made from water every living thing.' In the modern era, with the advent of the Big Bang theory, many Muslim scholars and scientists have noted the striking parallel between the Quranic description of a unified origin followed by a separation and the scientific model of the universe expanding from an initial singularity. This contemporary interpretation is often presented as a scientific miracle of the Quran, suggesting that the scripture contains knowledge of cosmology that was scientifically discovered fourteen centuries later. The linguistic depth of the Arabic terms allows for both the classical and modern understandings, reflecting the multi-layered nature of the Quranic text. The verse serves as a powerful sign (ayah) of God's creative power, inviting reflection on the origins of the cosmos and the intricate systems that sustain life.