This paragraph is extracted from the biography of Ahmad Al Badawi written by Alkabbani, the leader of Naqshabandis in the USA.

In those six months, Ahmad al-Badawi continued to search for him again. When he reappeared again, he said to him again, O my shaykh, I found you another time! At that time, the guide looked into his eyes transmitting from his heart to Ahmad al-Badawi's heart, through the eyes, internal knowledge the knowledge of the Book, and its secrets. He was giving, giving, giving until Light shone forth from Ahmad al-Badawi's eyes. It was so powerful that any one who looked into his eyes would die. Therefore he covered his face with a veil. At that time he was able to enter into the Divine Presence, and he received that key.

--Shaykh Hisham Mohammed Kabbani