Surah Al-Baqarah, verse 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 ﴿١٩٧﴾

2:197 The pilgrimage is in known months. Whoever commits himself to perform the pilgrimage, there should be no intimacy, foul language, and arguments during pilgrimage. Whatever good you do, Allah is aware of it. And take provisions for the journey, but the best provision is righteousness. So fear Me, O people of understanding