Hisn al-Muslim
Dhahabaẓ-ẓama', wabtallati ‘l-`urūq, wa thabata ‘l-'ajru in shā Allāh. 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.
ذَهَـبَ الظَّمَـأُ، وَابْتَلَّـتِ العُـروق، وَثَبَـتَ الأجْـرُ إِنْ شـاءَ الله
Reference