The splitting of the Moon (Arabic: انشقاق القمر) is a miracle in Muslim tradition attributed to the Islamic prophet Muhammad. It is derived from Surah Al-Qamar 54:1–2 and mentioned by Muslim traditions such as the Asbab al-Nuzul (context of revelation). Early traditions supporting a literal interpretation are transmitted on the authority of companions of Muhammad such as ibn Abbas, Anas ibn Malik, Abdullah ibn Masud and others. According to the Indian Muslim scholar Abdullah Yusuf Ali, the Moon will split again when the day of judgment approaches. He says that the verses may also have an allegorical meaning, i.e. the matter has become clear as the Moon. The Qur'anic verses 54:1–2 were part of the debate between medieval Muslim theologians and Muslim philosophers over the issue of the inviolability of heavenly bodies. The philosophers held that nature was composed of four fundamental elements: earth, air, fire, and water. These philosophers however held that the composition of heavenly bodies were different. This belief was based on the observation that the motion of heavenly bodies, unlike that of terrestrial bodies, was circular and without any beginnings or ends.