سورة Al-Baqarah ( The Cow ) - الآية 197

The Hajj (pilgrimage) is (in) the well-known months. So whosoever intends to perform Hajj therein (by assuming Ihram), then he should not have sexual relations (with his wife), nor commit sin, nor dispute unjustly during the Hajj. And whatever good you do, Allah knows it. And take provisions for the journey, but the best provision is At-Taqwa (piety, righteousness). So fear Me, O men of understanding!