Gleanings — Paragraph 565
Source (Arabic)
قل يا قوم لا تنظروا إليّ إلّا بعيني إن يريدنّ أن تعرفنّ الله وقدرته
Translation
If it be your wish, O people, to know God and to discover the greatness of His might, look, then, upon Me with Mine own eyes, and not with the eyes of anyone besides Me.