When the Prophet ﷺ finished the prayer, he asked forgiveness three times and said: "O Allah ....." The narrator then narrated the tradition like that of 'Aishah.
عَنْ ثَوْبَانَ مَوْلَى رَسُولِ اللَّهِ ﷺ أَنَّ النَّبِيَّ ﷺ كَانَ إِذَا أَرَادَ أَنْ يَنْصَرِفَ مِنْ صَلاَتِهِ اسْتَغْفَرَ ثَلاَثَ مَرَّاتٍ ثُمَّ قَالَ اللَّهُمَّ فَذَكَرَ مَعْنَى حَدِيثِ عَائِشَةَ ؓ
Messenger of Allah said: "When Messenger of Allah wanted to turn from his Salat, he would seek forgiveness from Allah three times, then say: (Allahumma Antas-Salam, wa minkas-salam, tabarakta ya dhal-jalali wal-Ikram) 'O Allah! You are the One free of defects and perfection is from You. Blessed are You, O Possesor of Majesty and Honor.'"
كَانَ رَسُولُ اللَّهِ ﷺ إِذَا أَرَادَ أَنْ يَنْصَرِفَ مِنْ صَلاَتِهِ اسْتَغْفَرَ اللَّهَ ثَلاَثَ مَرَّاتٍ ثُمَّ قَالَ اللَّهُمَّ أَنْتَ السَّلاَمُ وَمِنْكَ السَّلاَمُ تَبَارَكْتَ يَا ذَا الْجَلاَلِ وَالإِكْرَامِ
“Allahumma Antas-Salam wa minkas-salam tabarakta ya Dhal-jalali wal- ikram” (O Allah, You are As-Salam and from You is all peace, Blessed are You O Possessor of majesty and honour).”
أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ إِذَا انْصَرَفَ مِنْ صَلاَتِهِ اسْتَغْفَرَ ثَلاَثَ مَرَّاتٍ ثُمَّ يَقُولُ اللَّهُمَّ أَنْتَ السَّلاَمُ وَمِنْكَ السَّلاَمُ تَبَارَكْتَ يَا ذَا الْجَلاَلِ وَالإِكْرَامِ
Messenger of Allah said: "When Messenger of Allah wanted to turn from his Salat, he would seek forgiveness from Allah three times, then say: (Allahumma Antas-Salam, wa minkas-salam, tabarakta ya dhal-jalali wal-Ikram) 'O Allah! You are the One free of defects and perfection is from You. Blessed are You, O Possesor of Majesty and Honor.'" (Using translation from Tirmidhī 300)
كَانَ رَسُولُ اللهِ ﷺ إِذَا أَرَادَ أَنْ يَنْصَرِفَ مِنْ صَلَاتِهِ اسْتَغْفَرَ ثَلَاثَ مَرَّاتٍ ثُمَّ قَالَ اللهُمَّ أَنْتَ السَّلَامُ وَمِنْكَ السَّلَامُ تَبَارَكْتَ يَا ذَا الْجَلَالِ وَالْإِكْرَامِ
“Allahumma Antas-Salam wa minkas-salam tabarakta ya Dhal-jalali wal- ikram” (O Allah, You are As-Salam and from You is all peace, Blessed are You O Possessor of majesty and honour).” (Using translation from Ibn Mājah 928)
كَانَ رَسُولُ اللَّهِ ﷺ إِذَا أَرَادَ أَنْ يَنْصَرِفَ مِنْ صَلَاتِهِ اسْتَغْفَرَ ثَلَاثَ مَرَّاتٍ ثُمَّ قَالَ «اللَّهُمَّ أَنْتَ السَّلَامُ وَمِنْكَ السَّلَامُ تَبَارَكْتَ يَا ذَا الْجَلَالِ وَالْإِكْرَامِ»
“Allahumma Antas-Salam wa minkas-salam tabarakta ya Dhal-jalali wal- ikram” (O Allah, You are As-Salam and from You is all peace, Blessed are You O Possessor of majesty and honour).” (Using translation from Ibn Mājah 928)
«كَانَ رَسُولُ اللَّهِ ﷺ إِذَا أَرَادَ أَنْ يَنْصَرِفَ مِنَ الصَّلَاةِ اسْتَغْفِرْ ثَلَاثَ مَرَّاتٍ ثُمَّ قَالَ اللَّهُمَّ أَنْتَ السَّلَامُ وَمِنْكَ السَّلَامُ تَبَارَكْتَ يَا ذَا الْجَلَالِ وَالْإِكْرَامِ»