The Ṣúfí Shaykhs observe the following rule. When a novice joins them, with the purpose of renouncing the world, they subject him to spiritual discipline for the space of three years. If he fulfil the requirements of this discipline, well and good; otherwise, they declare that he cannot be admitted to the Path (_Ṭaríqat_). The first year is devoted to service of the people, the second year to service of God, and the third year to watching over his own heart. He can serve the people only when he places himself in the rank of servants and all other people in the rank of masters, i.e. he must regard all, without any discrimination, as being better than himself, and must consider it his duty to serve all alike; not in such a way as to deem himself superior to those whom he serves, for this is manifest perdition and evident fraud, and is one of the infectious cankers of the age (_az áfát-i zamána andar zamána yakí ínast_). And he can serve God Almighty only when he cuts off all his selfish interests relating either to this world or to the next, and worships God absolutely for His sake alone, inasmuch as whoever worships God for any thing’s sake worships himself and not God. And he can watch over his heart only when his thoughts are collected and cares are dismissed from his heart, so that in the presence of intimacy (with God) he preserves his heart from the assaults of heedlessness. When these three qualifications are possessed by the novice, he may wear the _muraqqa`a_ as a true mystic, not merely as an imitator of others. Now as to the person who invests the novice with the _muraqqa`a_, he must be a man of rectitude (_mustaqím al-ḥál_) who has traversed all the hills and dales of the Path, and tasted the rapture of “states” and perceived the nature of actions, and experienced the severity of the Divine majesty and the clemency of the Divine beauty. Furthermore, he must examine the state of his disciples and judge what point they will ultimately reach: whether they will retire (_ráji`án_), or stand still (_wáqifán_), or attain (_bálighán_). If he knows that some day they will abandon this Path, he must forbid them to enter upon it; if they will come to a stand, he must enjoin them to practise devotion; and if they will reach the goal, he must give them spiritual nourishment. The Ṣúfí Shaykhs are physicians of men’s souls. When the physician is ignorant of the patient’s malady he kills him by his art, because he does not know how to treat him and does not recognize the symptoms of danger, and prescribes food and drink unsuitable to his disease. The Apostle said: “The shaykh in his tribe is like the prophet in his nation.” Accordingly, as the prophets showed insight in their call to the people, and kept everyone in his due degree, so the Shaykh likewise should show insight in his call, and should give to everyone his proper spiritual food, in order that the object of his call may be secured.