faqih-2551Vol. 2, p. 317
وَ الْوُقُوفُ بِعَرَفَةَ سُنَّةٌ[3] وَ بِالْمَشْعَرِ فَرِيضَةٌ وَ مَا سِوَى ذَلِكَ مِنَ الْمَنَاسِكِ سُنَّةٌ[4]
Hadith.2556 - Imam Jafar ibn Muhammad Al-Sadiq (as) said: "Standing at Arafah is a Sunnah, and standing at al-Mash'ar is an obligation, and everything else from the rituals is Sunnah."