10 times
((لاَ إِلَهَ إِلاَّ اللَّهُ وَحْدَهُ لاَ شَرِيكَ لَهُ، لَهُ الْمُلْكُ وَلَهُ الْحَمْدُ يُحْيِي وَيُمِيتُ وَهُوَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ)) عَشْرَ مَرّاتٍ بَعْدَ صَلاةِ الْمَغْرِبِ وَالصُّبْحِ.
Edition transliteration
La ilaha illal-lahu wahdahu la shareeka lah, lahul-mulku walahul-hamd, yuhyee wayumeet, wahuwa AAala kulli shayin qadeer.(ten times after the maghrib & fajr prayers)
Meaning
None has the right to be worshipped except Allah, alone, without partner, to Him belongs all sovereignty and praise, He gives life and causes death and He is over all things omnipotent.(ten times after the maghrib and fajr prayers)
Source and references
Hisn al-Muslim, entry 72.The reference is copied from the edition; separate editorial verification is not complete yet.
Source edition: Fortress of the Muslim. Open source ↗