1552 - وَ سَأَلَ مُحَمَّدُ بْنُ خَالِدٍ اَلْقَسْرِيُّ أَبَا عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ عَنِ اَلاِسْتِخَارَةِ فَقَالَ «اِسْتَخِرِ اَللَّهَ فِي آخِرِ رَكْعَةٍ مِنْ صَلاَةِ اَللَّيْلِ وَ أَنْتَ سَاجِدٌ مِائَةَ مَرَّةٍ وَ مَرَّةً» قَالَ كَيْفَ أَقُولُ قَالَ «تَقُولُ أَسْتَخِيرُ اَللَّهَ بِرَحْمَتِهِ أَسْتَخِيرُ اَللَّهَ بِرَحْمَتِهِ.
Hadith.1552 - Muhammad ibn Khalid al-Qasri asked Imam Jafar ibn Muhammad Al-Sadiq 
about seeking divine guidance (istikhara).
Imam said: "Seek guidance from Allah (swt) in the last unit (rak'ah) of the night prayer while you are in prostration, repeating it one hundred and one times."
Muhammad asked: "How should I say it?"
Imam said: "You should say,
Astakheeru Allāha bi-raḥmatihi, astakheeru Allāha bi-raḥmatihi.
'I seek guidance from Allah (swt) by His mercy, I seek guidance from Allah (swt) by His mercy.'"
