This article is from Purification of the Mind (Jila’ Al-Khatir)
The truthful, sincere, practicing shaikhs are the doors to the True One (mighty and glorified is He) and His ways to His nearness. They are the heirs and deputies of the prophets and messengers (prayer and peace be on them). They are the individuals whom the True One (mighty and glorified is He) has singled out and the ones who call to Him. They are ambassadors between Him and the creatures. They are the physicians of religion and the teachers of the creatures. Accept from them and serve them. Surrender your ignorant lower selves to their commandments and prohibitions.
All forms of sustenance are in the hand of Allah (mighty and glorified is He): the sustenance of the bodies, the sustenance of the hearts, and the sustenance of the innermost beings. So request them from Him not from someone else. The sustenance of the bodies is food and drink, the sustenance of the hearts is the belief in the oneness of Allah, and the sustenance of the innermost beings is the private remembrance [of Allah].
Show mercy to your lower selves by striving against them, instructing them to observe the commandments and prohibitions, and training them. Be merciful to the creatures by commanding them to do what is right, forbidding them from committing what is wrong, offering them truthful advice, and taking them by the hand to the door of their Lord (mighty and glorified is He). Mercy is one of the attributes of the believers, whereas harshness is one of the attributes of the disbelievers.
Maintain a connection with the person who cuts you off, give to the person who deprives you, and pardon the person who wrongs you. If you do this, your rope will be connected to the rope of Allah (high is He) and what you have will be connected to what He has, because these morals are among the morals of Allah (mighty and glorified is He). Respond to the call of the muezzins who call you to the mosques, which are the home of hospitality, the home of private conversation. Answer their call for you will find salvation and satisfaction in them. If you respond to the call of His caller, He will admit you to His house, answer your prayers, draw you near, teach you knowingness and Knowledge, show you what He has, teach your limbs and senses the proper conduct, clean your hearts, purify your innermost beings, confer on you guiding inspiration, place you in His presence, lead your hearts to the abode of His nearness, and give them permission to enter into His presence. He is generous. If you respond to His call and do not underestimate it, He will answer your prayers, treat you kindly, and confer favors on you. The Invincible One has said: “Is the reward of goodness anything but goodness?” (55.60). If you act properly, He will give you good rewards. The Prophet (Allah’s prayer and peace be on him) has said: “As you treat others, you will be treated. As your state of affairs is, those who have authority over you will be. It is either in your favor or against you.”
* The Prophet (Allah’s prayer and peace be on him) has said: “Keep to good manners in your social relationships with people so that when you are dead they pray for Allah to show mercy to you and when you are alive they yearn for you.” Heed to this good advice. Tie it to your hearts and do not forget it. It points out to you an easy work that carries much reward. How good fine manners are! They are a source of comfort to the person who has them and to others. How detestable are bad manners! They are a source of fatigue to the person who has them and a source of harm to others.