Al-Baqarah 2:197

Alhajju ashhurun maAAloomatunfaman farada feehinna alhajja fala rafathawala fusooqa wala jidala fee alhajjiwama tafAAaloo min khayrin yaAAlamhu Allahuwatazawwadoo fa-inna khayra azzadi attaqwawattaqooni ya olee al-albab

"Ḥajj is [during] well-known months, so whoever has made ḥajj obligatory upon himself therein [by entering the state of iḥrām], there is [to be for him] no sexual relations and no disobedience and no disputing during ḥajj. And whatever good you do - Allāh knows it. And take provisions, but indeed, the best provision is fear of Allāh. And fear Me, O you of understanding."

Al-Baqarah 2:197, translation by Sahih International