Qur'an 2:197

ٱلْحَجُّ أَشْهُرٌ مَّعْلُومَـٰتٌ ۚ فَمَن فَرَضَ فِيهِنَّ ٱلْحَجَّ فَلَا رَفَثَ وَلَا فُسُوقَ وَلَا جِدَالَ فِى ٱلْحَجِّ ۗ وَمَا تَفْعَلُوا۟ مِنْ خَيْرٍ يَعْلَمْهُ ٱللَّهُ ۗ وَتَزَوَّدُوا۟ فَإِنَّ خَيْرَ ٱلزَّادِ ٱلتَّقْوَىٰ ۚ وَٱتَّقُونِ يَـٰٓأُو۟لِى ٱلْأَلْبَـٰبِ

“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-Baqara 2:197 · Saheeh International