Though veiling by Muslim women has been discussed from many angles and with various methodologies, the very basis of the discussion – the relationship between the Qur'a¯n and the veil – still remains unclear. This paper returns to this basis, focusing on three relevant passages from the Qur'a¯n (33:59, 33:53, 24:31). An analysis of the first two of these passages in association with a number of prophetic traditions [hadi¯th] shows clearly that one of the main purposes of veiling in early Islamic society was to distinguish, and secure the safety or status of, privileged women. Problematic is Verse 24:31, which contains another reason for veiling in Islam: to cover women's beauty. Because of the ambiguity of the words contained in this passage, and the absence of any solid hadi¯th concerning it, ample room for interpretation was provided for later religious authorities. The extent of covering changed over time and so did the grounds for argument. By following major exegetic texts [tafsi¯r] on this verse from the ninth to the fourteenth centuries, this paper shows the relationship between the Qur'a¯n, hadi¯th, tafsi¯r, and the veil.