Du`ā of Kaffārah al-Majlis
(Expiation of the Gathering)
In the name of Allāh, the Most Gracious, the Most Merciful;
All the praise and Thanks are due to Allāh, the Lord of al-'ālameen. I testify that there is none worthy of worship except Allāh, and that Muhammad, sallallāhu alayhi wa sallam, is His Messenger.
The Prophet (Sallallāhu 'alayhi wa sallam) said, “No people sit in a gathering in which they do not mention Allāh, nor send prayers on the Prophet, without it being a source of regret for them; if Allāh wishes, He will punish them, or if He wishes, he will forgive them" [Narrated by at-Tirmidzi, Hākim and Ahmad: Sahih]
The first supplication is the fullest form of the du'ā known as Kaffārah al-Majlis (Expiation of the Gathering):
Subhānakallāhumma wabihamdika, Ash-hadu and lā ilāha ill-Allāh illa anta. Astaghfiruka waatubuilayk.” (Glorified be Allāh, and Praised. Glorified be You, O Allāh, and Praised. I bear witness that there is no true god except you. I seek forgiveness from you and repent to you.)
The Prophet (Sallallāhu 'alayhi wa sallam), "He who says it in a gathering of Remembrance (of Allāh), it will be like a seal to stamp it with, and he who says it in a gathering of vain talk, it will be expiation for it"[Narrated by Hākim and Tabarāni: Sahih.].
Aishah (radiyallāhu’anha) narrated that she asked the Allāh’s Messenger (Sallallāhu ‘alayhi wa sallam) about some words he said after a gathering. Allāh’s Messenger (Sallallāhu ‘alayhi wa sallam) said: "If he has said some good words (and he says this statement of remembrance), it will be a seal for them to preserve them until the Day of Resurrection, and if he has said something other than that, an expiation (words) for him will be: ‘Subhanak Allāhumma wa bihamdika, astaghfiruka wa atubu ilayk (Glory and praise be to You, O Allāh , I seek Your forgiveness and I repent to You.)’” [An-Nasā’ie 1344, Eng. trans: Vol. 2, Book 13, Hadith 1345(Hasan)]
“Allāhumma salli 'ala Muhammad, wa 'ala Ali Muhammad kamā sallayta 'ala āli Ibrāhīm, wa bārik 'ala Muhammad, wa ala āli Muhammad kama bārakta ‘ala āli Ibrāhīm, fil-‘ālamīn; Innaka Hamīdun Majīd”
(0 Allah! Send Prayers upon Muhammad and the members of his household as you’ve Sent Prayers upon the family of Ibrāhīm's. And Send Blessings to Muhammad and the members of his household as You Granted Blessings upon the family of Ibrāhīm, among all the nations’ Verily You are Most Praiseworthy, Full of Glory)”, [Muslim (803]