تحفة النظار في غرايب الامصار وعجايب الاسفار 12.7.6

12.7.6

Everyone who rides on that day is armoured, he and his horse, and most of them are the Sultan's mamlūks. When the Sultan reaches the gate of the muṣallā he halts at its gate and orders the qāḍīs, the great amīrs and the great aʿizza to enter; then the Sultan dismounts, and the imām prays and preaches. If it is the Feast of the Sacrifice, the Sultan is brought a camel and slaughters it with a spear they call al-nīza (with i after the n and a after the z), after placing a silk cloth over his clothes to guard against the blood; then he mounts the elephant and returns to his palace.