The Success (in the Hereafter)
وَ بِهَذَا الْإِسْنَادِ قَالَ قَالَ أَمِيرُ الْمُؤْمِنِينَ ( عليه السلام ) الدُّعَاءُ مَفَاتِيحُ النَّجَاحِ وَ مَقَالِيدُ الْفَلَاحِ وَ خَيْرُ الدُّعَاءِ مَا صَدَرَ عَنْ صَدْرٍ نَقِيٍّ وَ قَلْبٍ تَقِيٍّ وَ فِي الْمُنَاجَاةِ سَبَبُ النَّجَاةِ وَ بِالْإِخْلَاصِ يَكُونُ الْخَلَاصُ فَإِذَا اشْتَدَّ الْفَزَعُ فَإِلَى اللَّهِ الْمَفْزَعُ
And by this chain,
He-asws said: ‘The supplications are the keys to achievement and collars of ‘الْفَلَاحِ’ the success, and the best of the supplication is what is generated by a clean chest and a fearful heart’.[1]
[1] Al Kafi V 2 – The Book Of Supplication CH 2 H 2