Al-Baqarah 2:197 الحج اشهر معلومات فمن فرض فيهن الحج فلا رفث ولا فسوق ولا جدال في الحج وما تفعلوا من خير يعلمه الله وتزودوا فان خير الزاد التقوى واتقون يا اولي الالباب ١٩٧

The Hajj (pilgrimage) is (in) the well-known (lunar year) months (i.e. the 10th month, the 11th month and the first ten days of the 12th month of the Islâmic calendar, i.e. two months and ten days). So whosoever intends to perform Hajj¹ therein (by assuming Ihrâm), then he should not have sexual relations (with his wife), nor commit sin, nor dispute unjustly during the Hajj. And whatever good you do, (be sure) Allâh knows it. And take a provision (with you) for the journey, but the best provision is At-Taqwa (piety, righteousness). So fear Me, O men of understanding!