“A man in Masjid al-Haram (the Sacred Masjid) asked abu ‘Abd Allah, Alayhi al-Salam, about the greatest sin. He (the Imam) replied, ‘If one attends these two places, ‘Arafah and al-Muzdalifah, performs Sa‘y between these two hills, performs Tawaf around this House, performs salat (prayer) behind Maqam of Ibrahim (a.s.) then says to himself or thinks that Allah does not forgive his sins, he has, of all people, sinned the most.’”