Those treading the Path should strive to follow the method of the Messenger of Allah (p.b.u.h.) in everything. Following the Sunna creates much light in the heart. Have patience when anyone says something that displeases you. Do not say anything in haste, especially in anger. Be very careful in the state of anger. Never consider yourself to be perfect or one who possess excellence. Think before speaking.
When you are convinced that in what you intend to say there is no harm, and in it is some benefit or need regarding the world or religion, then only proclaim it. Never speak ill even of an evil person. Do not listen to evil. Do not criticise a dervish who may be overwhelmed by some ecstatic condition and may be saying something that, in your opinion, seems to be in conflict with the religion. Never despise any Muslim even if he happens to be a sinner. Never yearn nor have greed for wealth and honour. As much as is possible remain in the company of those who engage in remembrance. Such association creates light, courage, and love in the heart.
Do not expend much effort in worldly affairs. Do not meet people unnecessarily. When necessity compels you to meet others, meet them kindly and display good manners. As soon as the need has been fulfilled withdraw from company. Remain aloof especially from acquaintances. Search for the companionship of the people of Allah (the pious and saintly ones) or meet with such persons who are not well known to you. Harm from such people is slight. If some spiritual condition occurs in your heart or some amazing knowledge enters the heart, inform your shaykh. Do not request your shaykh for some special devotional practice. Do not inform anyone besides your shaykh of the effect remembrance produces in you. Do not deceive nor beat about the bush when you have realised your error. Confess immediately. In all circumstances have trust in Allah and present your needs only to Him. Request Allah to grant you steadfastness in the religion.
From The Path to Perfection: an edited anthology of the spiritual teachings of Hakim Al-Umma Mawlana Ashraf ‘Ali Thanawi (California: White Thread Press, 2005), pp. 121-122.