The Expiation of Assembly - Kaffaratul-Majlis
 

سُبْحـانَكَ اللّهُـمَّ وَبِحَمدِك، أَشْهَـدُ أَنْ لا إِلهَ إِلاّ أَنْتَ أَسْتَغْفِرُكَ وَأَتوبُ إِلَـيْك

196. Subhaanaka Allaahumma wa bihamdika, 'ash-hadu 'an laa 'ilaaha 'illaa 'Anta, 'astaghfiruka wa 'atoobu 'ilayka.

Glory is to You, O Allah, and praise is to You. I bear witness that there is none worthy of worship but You. I seek Your forgiveness and repent to You.

Reference: Abu Dawud, Ibn Majah, At-Tirmithi and An-Nasa'i. See also Al-Albani, Sahih At-Tirmithi 3/ 153. Aishah (RA) said: "Allah's Messenger (SAW) did not sit in a gathering, and did not recite the Qur'an, and did not perform any prayer without concluding by saying ... (then she quoted the above)." This was reported by An-Nasa'i in 'Amalul-Yawm wal-Laylah (no.308), and Dr. Farooq Hamadah graded it authentic in his checking of the same book, p. 273. See also Ahmad 6/77