تحفة النظار في غرايب الامصار وعجايب الاسفار 13.101.4

13.101.4

The ancients carved into the mountain something like steps by which one climbs, and drove iron pegs into them and hung chains from them so that whoever climbs may hold on to them. There are ten chains: two at the foot of the mountain where the gate is, seven in succession after them, and the tenth is the Chain of the Profession of Faith, because when a person reaches it and looks down the mountain, fear seizes him and he recites the profession of faith for dread of falling. Once you pass this chain you find a neglected path. From the tenth chain to the Cave of al-Khiḍr is seven miles; it is in