'One of our companions narrated, 'I was sitting with Abu 'Abdillah (AS) when he recited the verse: So when the first occasion of the two [prophecies} came, We aroused against you Our servants possessing great might, and they ransacked [your} habitations, and the promise was bound to be fulfilled. We asked, 'Who are those, may we be your ransom?' He said three times, 'By Allah! These are the people of Qum.?