From Hadhrat Maulana Zakariya Kandhalvi (Rahimullah)’s “Aap Beti”, p. 631-632:
Shah Abdul Aziz says: “In the terminology of the Soofis there are four kinds of ‘Nisbat’.
1. The first kind is Nisbat In’ikaasi (Reflected Nibat).
It is that condition which is attained through Zikrullah and Shugl (spiritual striving), so much so that a purity of the heart is attained and like a mirror the heart reflects whatever comes before it. Thus when this mureed goes into the presence of his Sheikh, all the heart’s light rays and spiritual effects of the Sheikh become reflected in the heart of the mureed. For this reason this is called Nisbat In’ikaasi.
The effect of this Nisbat remains with the mureed only for as long as he is in the presence of his Sheikh or near him. When he leaves the Sheikh’s presence, the effect of this Nisbat ceases.”
My one opinion is that this form of Nisbat resembles a photo, which is in fact a reflection. When the reflection is captured through various substances, it becomes permanent and concrete. Some Sheikhs give ‘Ijaazat for Bay’at’ for people who have this ‘Nisbat’. It is to this Nisbat, to which Maulana Thanwy refers to, when he says that if through Zikr and spiritual striving a person exerts himself, this Nisbat is retained and even made more solid.
In my opinion this is the Nisbat about which Maulana Thanwy said: “Sometimes an incompetent and imperfect one is given Ijaazat for Bay’at…”
When the terms ‘imperfect’ and ‘incompetent’ are used, it should be borne in mind that, that is in relation to the person. If Ijaazat is given to this person, he still requires much effort to retain this state and progress further.