Commenting on Sheikh Abu Madyan maghrabi ra’s instruction to his mureed on muraqaba (meditation) that “Allah SWT is watching me”, Hakeemul Ummat Mawlana Ashraf Ali Thanawi ra said that this contemplation is quickest way to fana (annihilation).

Hazrat Mufti Mohammad Shafii ra adds, when this thinking that Allah SWT is watching me, is firmly established in an individual’s mind then his desires, aspirations and even his own being will be obliterated. This is station of fana (annihilation), the highest position on the path of Tasawwuf.

Rooh e Tasawwuf*, page 109.
*A compilation of sayings of sufi sages by Hakeemul Ummat Mawlana Ashraf Ali Thanawi ra, translated into Urdu with brief commentary by Mufti Mohammed Shafii ra.

Sayyidi wa sanadi Hazrat Mawlana Mohammad Taqi Usmani sahib db instructed an individual to do this muraqaba,
“I am in front of Allah SWT and He is watching me”,
for 5 minutes daily when starting the wird.