Imam Jafar ibn Muhammad Al-Sadiq عليه السلام said: "The expiation for gatherings is to say upon leaving them: 'Glory be to your Lord عز وجل, the Lord عز وجل of Honor, above what they describe. And peace be upon the messengers. And all praise is due to Allah سبحانه وتعالى, the Lord عز وجل of the worlds.' (Surah As-Saffat 37:180-182)."