Hijab

Lack of veiling or poor veiling are extremely bad and lead to a lot of corruption. It is God's intent to forbid lack of veiling and poor veiling: Blessed are those who follow God and protect their women by enforcing veiling. As men and women have to engage in various social, educational, etc. activities and have to appear in public places, the Quran has issued a decree that is obligatory for both to follow to maintain their mental, psychological and spiritual health.

And for women: O Prophet! Tell thy wives and daughters, and the believing women, that they should cast their outer garments over their persons (when abroad): that is most convenient, that they should be known (as such) and not molested. And God is Oft-Forgiving, most Merciful. [Holy Quran: Ahzab 33:59]

And for men and women:

Say to the believing men that they should lower their gaze and guard their modesty: that will make for greater purity for them: and God is well acquainted with all that they do. [Holy Quran: Nur 24:30]And say to the believing women that they should lower their gaze and guard their modesty; that they should not display their beauty and ornaments except what (must ordinarily) appear thereof.[Holy Quran: Nur 24:31]

Imam Sadiq (Pbuh) said: Jesus told his companions "Avoid dirty looks, since they will plant the desire to do forbidden acts in the heart, and it will cause sedition for the one who looks. Blessed be the one who has placed his eyes in his heart and uses his physical eyes only for what is necessary to see. [Bihar al-Anwar, v.78, p.284]

The Commander of the Faithful (Pbuh) said: There is no part of the body less grateful than the eyes. If you just deprive it of what pleases it, it will make you forget God, the Almighty. [Bihar al-Anwar, v.104, p.36]

The Prophet (Pbuh) said: In fornication, each part of the body is partly responsible. That of the eye is forbidden from gazing at a strange woman. [Bihar al-Anwar, v.104, p.36]

When, as stated in the Quran, Shoeib's daughter told her father about Moses: O' my father. Please hire him since he is truly the most powerful and honest man you can hire. He told her: O' my daughter. Yes, he is indeed a strong man. You recognized his strength from his putting the rock aside. But how do you recognize his honesty? She said: O' father. I was coming home walking ahead of him. He told me that he would walk ahead and I should warn him when he goes the wrong way. He said he is not from among the people who look at women from behind. [Bihar al-Anwar, v.13, p.32]

The Prophet (Pbuh) said: Whoever keeps looking at forbidden scenes, God will fill his eyes with fire in the Hereafter, unless he repents and stops his evil deeds. [Mizan al-Hikmat, v.10, p.77]

The Prophet (Pbuh) narrates God: A forbidden look is similar to a poisonous dart from Satan. Whoever fears me and avoids looking at strange women (who are forbidden to look at), I shall reward him with a faith with its sweetness to be felt in his heart. [Mizan al-Hikmat, v.10, p.78]

Adopted from the book: "The Islamic Family Structure" by: "Husayn Ansarian"