Bkyr bin Ata'a al-Lythy بكير بن عطاء الليثي الكوفي · The Book on Hajj

Similarly from Ibn Umar, from the Prophet.

Some people among the residents of Najd came to the Messenger of Allah while he was at Arafat. They were questioning him, so he ordered a caller to proclaim: "The Hajj is Arafah. Whoever came to Jam during the night, before the time of Fajr, then he has attended the Hajj. The days of Mina are three, so whoever hastens (leaving after) two days, then there is no sin upon him, and whoever delays, then there is no sin upon…