"When Messenger of Allah said the Salam he would not remain seated except long enough to say: (Allahumma antas-salam, wa minkas-salam, tabarakta dhal jalali wal-Ikram) 'O Allah! You are the One free of defects, and perfection is from You. Blessed are You, Possessor of Majesty and Honor.'"  

كَانَ رَسُولُ اللَّهِ ﷺ إِذَا سَلَّمَ لاَ يَقْعُدُ إِلاَّ مِقْدَارَ مَا يَقُولُ اللَّهُمَّ أَنْتَ السَّلاَمُ وَمِنْكَ السَّلاَمُ تَبَارَكْتَ ذَا الْجَلاَلِ وَالإِكْرَامِ  

(Another chain) which is similar, but he said: (Tabarakta ya dhal-jalali wal-ikram) "Blessed are You, O Possessor of Majesty and Honor."  

وَقَالَ تَبَارَكْتَ يَا ذَا الْجَلاَلِ وَالإِكْرَامِ قَالَ وَفِي الْبَابِ عَنْ ثَوْبَانَ وَابْنِ عُمَرَ وَابْنِ عَبَّاسٍ وَأَبِي سَعِيدٍ وَأَبِي هُرَيْرَةَ وَالْمُغِيرَةِ بْنِ شُعْبَةَ  

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