Tasawwuf is the concept, which embodies the purification of the heart by sincerely, and obediently practising the lifestyle of the Holy Prophet (sallal laahu alaihi wasallam) in all spheres of his life.
Hadrat Sheikh Data Ganj Bakhsh Ali Hajweri (alaihir rahmah) (400-465 A.H.) narrates from Hadrat Murtaish (alaihir rahmah). �Tasawwuf is refined character. This refined character may be attained in three ways: Firstly, to obey the commandments of Almighty Allah and his Rasool (sallal laahu alaihi wasallam) with utmost sincerity. 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. Thirdly, to avoid all evil desires and Satanic attractions. By complying to the aforementioned regulations one attains piety.� (Kashful Mahjoob, pg. 106)