Note 92 — HASAN OF BASSORAH.[5] (continued 2)
Richard Francis Burton translation · Edition 2
This is an error for the fifth which occurs in the popular saying, “Is he the fifth of the sons of Al-Abbás!” i.e. Harun al-Rashid. Lane (note, in loco) thus accounts for the frequent mention of the Caliph, the greatest of the Abbasides in The Nights. But this is a causa non causa.