ذَهَـبَ الظَّمَـأُ، وَابْتَلَّـتِ العُـروق، وَثَبَـتَ الأجْـرُ إِنْ شـاءَ الله
Thahabadh-dhama u wabtallatil- urooqu, wa thabatal- ajru inshaa Allaah.
The thirst is gone, the veins are moistened and the reward is confirmed, if Allah wills.
Reference:
Abu Dawud 2/306 and others. See also Al- Albani, Sahihul-Jami As-Saghir 4/209.