This article is from Purification of the Mind (Jila’ Al-Khatir)
O young men, you have to find a physician of the Law, for he can treat your illnesses. Follow his instructions and take the medicine that he prescribes and then your good health will be restored. Follow the young servant and he will take you to the master. The Law is a young servant, whereas Knowledge is a master. Follow it, see where it enters, and enter after it. Seek the door of your Lord (mighty and glorified is He) and behave well in the company of the Law, which is the young servant that stands at the door. If you do not follow the Law you will not reach Knowledge. Have you not heard these words of your Lord (mighty and glorified is He): “And what the Messenger gives you, take; and what he forbids you, abstain from” (from 59.7). If you become well‑mannered in the company of the Law at the door of your Lord (mighty and glorified is He) and cultivate good behavior with Him, He will love you, open to you the door of nearness, and seat you at the table of His favor and generosity. You will become His guests. He will speak to your hearts, entertain your innermost beings, and teach them the Knowledge that He teaches to the elite among His creatures. So, His Law will be between Him and the creatures, whereas His Knowledge will be between Him and you, because the Law is common, whereas Knowledge is special. The Law is faith, whereas Knowledge is direct seeing.
* O Allah, make us work and be sincere in our works, grant us acquaintance with Your Knowledge, steadfastness in our acquaintance and “give us good in this world and good in the hereafter and protect us from the torment of the Fire.” Praise be to Allah Lord of the worlds. “O Our Lord, perfect our light for us, and forgive us. You are Capable of everything” (from 66.8). “O My Lord, enable me to be thankful for Your favor that You have conferred on me and on my parents, and to do righteousness that is pleasing to You, and do good to me in my offspring. I repent to You and I am one of the Muslims” (from 46.15). “Glory be to your Lord, the Lord of invincibility, above what they describe. And peace be on the messengers. And praise be to Allah, the Lord of the Worlds” (37.180‑182). Praise be to Allah with whose favor all good works are completed.