Qur'ān 2:197 · Al-Baqarah (البقرة)

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

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