While eating lawful food is a radiant light, eating unlawful food is a suffocating darkness. Eating unlawful food kills the heart, whereas the lawful morsel brings the heart to life.

Abdul Qadir Jilani (R.A)(Mar 17, 1078 to Feb 21, 1166)

Hanbali Sunni Muslim preacher, orator, ascetic, mystic, sayyid, faqih, and theologian who was known for being the eponymous founder of the Qadiriyya tariqa (Sufi order) of Sufism.