Chapter on the Obligations of Hajj

The obligatory acts of Hajj are seven: 1. Entering the state of Ihram. 2. Reciting the four phrases of Talbiyah privately: "Labbayka Allahumma Labbayk, Labbayka la sharika laka Labbayk, Inna al-hamda wa al-ni'mata laka…

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."