…Indeed, it is not the eyes that become blind, but it is their hearts that become blind within the breasts.He said:Is it not true that with the light of the heart’s insight (nūr baṣar al-qalb) a person can overcome desire and lust? But when the heart’s sight is blind to what is within it, lust will overcome him and heedlessness (ghafla) will [afflict] him at regular intervals. Consequently his body will stray into sin without being guided to God under any circumstances.His words, Exalted is He: