In the Holy Quran Allah says;

Meaning: O' believers! fear Allah persistently and find medium to get close to Him.(Al-Maida-35)

In this verse the word Waseela (medium) refers to a Kamil Murshid. According to dictionary waseela (medium) means such source or means through which one can reach ones destination and it should be so helpful that all the needs of the needy are fulfilled and he is completely satisfied by obtaining all goals of his life. Lissan-ul-Arab (volume II-page 725) defines Waseela as "by means of which closeness to some other thing is achieved".

According to Shariat, Waseela (medium) means to find closeness to Allah through a person who is already close to Allah and His beloved, who has travelled the mystic path and knows its ups and downs. In Tasawuf such person is known as Murshid, spiritual Mentor and guide. A true Murshid is the one who knows the way to Allah perfectly and who has reached the Divine Oneness ..

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Hazrat Sheikh Data Ganj Bakhsh Ali Hajweri (radi Allahu anhu) (400-465 A.H.) narrates from Hazrat Murtaish (radi Allahu anhu). "Tasawwuf is refined character. This refined character may be attained in three ways:

1. Firstly, to obey the commandments of Allah Taala and his Rasool (sallal laahu alaihi wasallam) with utmost sincerity,
2. Secondly, to respect all those senior to us in age, knowledge and piety; love the young; observe justice at all times and not to expect any return for our good actions.
3. Thirdly, to avoid all evil desires and Satanic attractions.