فَإِذَا كَانَ قَبْلَ يَوْمِ التَّرْوِيَةِ بِيَوْمٍ خَطَبَ الْإِمَامُ خُطْبَةً يُعَلِّمُ النَّاسَ فِيهَا الْخُرُوجَ إِلَى مِنًى، وَالصَّلَاةَ بِعَرَفَاتَ، وَالْوُقُوفَ، وَالْإِفَاضَةَ.
Translation: On the day before Tarwiyah, the imam delivers a sermon explaining departure to Mina, prayer at Arafat, the standing, and the onward departure.
Tarwiyah is 8 Dhu al-Hijjah, so the preceding day is 7 Dhu al-Hijjah. The sermon prepares the pilgrims for the following rites.
Wuqūf refers to the prescribed standing at Arafat, and ifāḍah to departing from the gathering. Detailed Arafat rulings are reserved for the next lesson.