From Sahifa Mahdi(ajtfs):Imam Sadiq (peace be upon him) in the book "Jamaali Saliheen" said:
among our rights on the Shi'a is to place their hands on their chin after the obligatory prayers and recite the following three times:
يا رَبَّ مُحَمَّدٍ عَجِّلْ فَرَجَ آلِ مُحَمَّدٍ ، يا رَبَّ مُحَمَّدٍ إِحْفَظْ غَيْبَةَ مُحَمَّدٍ ، يا رَبَّ مُحَمَّدٍ إِنْتَقِمْ لِابْنَةِ مُحَمَّدٍ عليهما السلام .
O' Lord of Muhammad hasten the relief of the family of Muhammad, O' Lord of Muhammad protect the absence of Muhammad, O' Lord of Muhammad retaliate for the daughter of Muhammad (peace be on them).
From Sahifa Mahdi(ajtfs):Imam Sadiq (peace be upon him) in the book "Jamaali Saliheen" said:
among our rights on the Shi'a is to place their hands on their chin after the obligatory prayers and recite the following three times:
يا رَبَّ مُحَمَّدٍ عَجِّلْ فَرَجَ آلِ مُحَمَّدٍ ، يا رَبَّ مُحَمَّدٍ إِحْفَظْ غَيْبَةَ مُحَمَّدٍ ، يا رَبَّ مُحَمَّدٍ إِنْتَقِمْ لِابْنَةِ مُحَمَّدٍ عليهما السلام .
O' Lord of Muhammad hasten the relief of the family of Muhammad, O' Lord of Muhammad protect the absence of Muhammad, O' Lord of Muhammad retaliate for the daughter of Muhammad (peace be on them).