Fortress of the Muslim
Hisn al-Muslim 176
Arabic hadith text
ذَهَـبَ الظَّمَـأُ، وَابْتَلَّـتِ العُـروق، وَثَبَـتَ الأجْـرُ إِنْ شـاءَ الله
Translation
The thirst is gone, the veins are moist, and the reward is assured, if Allah wills.