Which correctly distinguishes arrival tawaf from farewell tawaf in Al-Quduri?

Book of Hajj: Farewell Tawaf, Muhassab and Departure from Makkah

• Arrival tawaf is Sunnah; farewell tawaf is wajib
• Arrival tawaf is wajib at departure; farewell tawaf Sunnah at arrival
• Both are performed at Arafat
• Both involve stoning pebbles