The veil predates the Qur’an: as early as the Assyrians, the free woman was obliged to wear the veil, under penalty of punishment. This practice is found, with varying degrees of obligation, among Jews and Romans.
The Koran takes up this practice and codifies it, without however explicitly recommending the wearing of the veil. Nevertheless, several writings evoke this practice for the wives of the Prophet Mohammed, notably in verse 31 of Sura 24 :
“And tell the believing women to lower their gaze, to keep their chastity, and to show only what they appear to be wearing, and to fold their veil over their breasts; And let them show their attire only to their husbands, or to their fathers, or to the fathers of their husbands, or to their sons, or to the sons of their husbands, or to their brothers, or to the sons of their brothers, or to the sons of their sisters, or to Muslim women, or to the slaves they own, or to impotent male servants, or to impubescent boys who are ignorant of the hidden parts of women. »
But also in verse 59 of Sura 33 :
“O Prophet! Tell your wives, your daughters, and the wives of the believers, to bring back on them their great veils: they will be more quickly recognized and will avoid being offended. Allah is Oft-Forgiving, Most Merciful. »