that the Messenger of Allah ﷺ said: "The Hajj is 'Arafat, the Hajj is 'Arafat, the Hajj is 'Arafat. The days of Mina are three: But whoever hastens to leave in two days, there is no sin on him, and whoever stays on, there is no sin on him (2:203). And whoever sees (attends) the 'Arafah before the rising of Fajr, then he has performed the Hajj." Ibn Abi 'Umar said: "Sufyan bin 'Uyainah said: 'This is the best Hadith that Ath-Thawri reported.'" (Using translation from Tirmidhī 2975)
قَالَ رَسُولُ اللَّهِ ﷺ الْحَجُّ عَرَفَةُ أَوْ عَرَفَاتٌ فَمَنْ أَدْرَكَ عَرَفَةَ قَبْلَ طُلُوعِ الْفَجْرِ فَقَدْ أَدْرَكَ الْحَجَّ وَأَيَّامُ مِنًى ثَلَاثٌ {فَمَنْ تَعَجَّلَ فِي يَوْمَيْنِ فَلَا إِثْمَ} [البقرة 203] عَلَيْهِ وَمَنْ تَأَخَّرَ فَلَا إِثْمَ عَلَيْهِ