"Mawlana Shaykh Nazim Haqqani says we are Rabbani"
From Ibriz-Golden Words of Sidi 'Abdal-'Aziz Dabbagh;
What does Rabbaniyyun mean?
The word is Syriac and its meaning is: those on whose behalf God has disclosed knowledge without study.
It's composed of three words: Rabba, ni and yun. The explanation of the first word is that the Ra with a refers to the great amount of good which the doubled Ba indicates.
It's as if God says: "This is a great amount of good." The explanation of the second word is that the nun with I refers to closeness.
The explanation of the third word is that the Ya with U refers to something which doesn't remain in a fixed state, like lightning and light.
And the Nun with a refers to the good which resides in the body and is ablaze in it. So it's as if God says: "This is the good which is near to Me and which is in the bodies of the people of illumination a light from among the lights and a secret from among the secrets. It resides in their bodies and is ablaze in them."
al-Rabbaniyyun thus means Divinely guided scholars!