Shaykh Dr. Yasir Qadhi makes a critical analysis in the magnitude of difference between the Du'a of Adam AS and the Du'a of Shaytan.
After eating from the forbidden tree as against the command of Allah, Adam AS supplicated for forgiveness in front of Allah SWT and Allah in His Infinite Mercy forgave Adam AS.
In a similar fashion, Shaytan or Iblis too supplicated to Allah SWT after disobeying His command. Iblis was also granted what he wished for.
So, what is the difference between these two situations? The difference lies in what was asked and how it was asked to Allah. Listen intently and be riveted in the lecture.