Not graded
Hisn al-Muslim (Fortress of the Muslim) 177
((اللَّهُمَّ إِنِّي أَسْأَلُكَ بِرَحْمَتِكَ الَّتِي وَسِعَتْ كُلَّ شَيْءٍ أَنْ تَغْفِرَ لِي)).
(O Allah, I ask You by Your mercy which envelopes all things, that You forgive me.)
Cited in Hisn al-Muslim (Fortress of the Muslim) (No. 177).