1961
Qur'an 2.216 (213), 232 (232); 3.66 (
5
9); 24.19 (19).
1962
For this Ibn Khaldun needed a large library, such as he did not have at his disposal at Qal'at Ibn Salamah where the
Muqaddimah
was written. Cf.
Autobiography,
p.
230.