Sufism has always had the function of purifying Islamic ethics and that fasting and tazkiya is like lighting a lamp.
Seyyed Hossein NasrThe traditional doctrine of man and not the measurement of skulls and footprints is the key for the understanding of that anthropos who, despite the rebellion of Promethean man against Heaven from the period of Renaissance and its aftermath, is still the inner man of every man, the reality which no human being can deny wherever and whenever he lives, the imprint of a theomorphic nature which no historical change and transformation can erase completely from the face of that creature called man.
Seyyed Hossein NasrIn fact many Hindu yogis and Sufis met, they became friends, they spoke about the knowledge and love of God; about all the similarities that exist. And then the simplicity of Islam, the fact these people practiced what they preached brought many, many Hindus into Islam.
Seyyed Hossein NasrLook at Senegal, about 90% of the Muslims in Senegal are Tijani or Qadiri Sufis. Among them, they have very great teachers who have written poems about al-Hallaj, and they have not been killed. In fact, it's Sufism that brought Islam through all of Senegal, right under our noses the last couple of centuries. And you can go down the same line through Indonesia and Malaysia.
Seyyed Hossein Nasr