Arabic (Original)
حَدَّثَنَا عَفَّانُ حَدَّثَنَا شَرِيكٌ عَنْ سِمَاكٍ عَنْ عِكْرِمَةَ عَنْ ابْنِ عَبَّاسٍ وَرَفَعَهُ قَالَ مَا كَانَ مِنْ حِلْفٍ فِي الْجَاهِلِيَّةِ لَمْ يَزِدْهُ الْإِسْلَامُ إِلَّا حِدَّةً وَشِدَّةً.
English Translation
The Messenger of Allah (peace be upon him) said: 'Say: la ilaha illallah (there is no deity except Allah), and by it you will be successful.'