A Supplication For Estikharah

Imam Reza (A.S) said: “whenever you decide to do something, at first, perform 2 rak’at (units) prayer, and ask for God’s blessing a hundred and one times, then do whatever you intend to do. Say this in your prayer: 

 لاَ إِلَهَ إِلّاَ اللَّهُ الْعَلِيُّ الْعَظِيمُ لاَ إِلَهَ إِلّاَ اللَّهُ الْحَلِيمُ الْكَرِيمُ رَبَّ مُحَمَّدٍ وعَلِيٍّ خِرْ لِي فِي أَمْرِي كَذَا وكَذَا لِلدُّنْيَا والاْخِرَةِ خِيَرَةً مِنْ عِنْدِكَ مَا لَكَ فِيهِ رِضًى ولِي فِيهِ صَلاَحٌ فِي خَيْرٍ وعَافِيَةٍ يَا ذَا الْمَنِّ والطَّوْل. 

There is no god but Allah the All-High, the All-Glorious; there is no god but Allah the Most Forbearing, the All-Generous; O’ the Lord of being of Muhammad and Ali, put the goodness for me in my such and such request both in this world and the Hereafter, the goodness from You, in which is Your contentment, and put my serviceability and good health in my goodness, O’ the Possessor  of Favors and Wealthiness. 

Mustadrak al-Wasa’il, vol. 6, p. 246