Sunan Abu Dawud
1483
Sahih+3

Abu Hurairah reported the Messenger of Allah (ﷺ) as saying:"One of you should not say (in his supplication): O Allah, forgive me if You please, show mercy to me if You please.' Rather, be firm in your asking, for no one can force Him

SahihAl-Albani
SahihMuhammad Muhyi Al-Din Abdul Hamid