If you fast in this worldly life –
restraining your (soul’s desire for drink by being) thirsty out of obedience to your Lord (Glorified and Exalted Be He) and abandoning your desires out of obedience to your Lord (Glorified and Exalted Be He), then indeed Allaah will recompense you on the Day of Judgement by resurrecting you whilst you are satiated with drink when the people are thirsty, the sun a mile over their heads and soaked in sweat to the extent that it (i.e. the water from sweating) will extend from the unbeliever’s throat to his (or her) nose – completely drowned in sweat, and Allaah’s refuge is sought. But as for the believer, he (or she) will be shaded due to obedience to Allaah (Glorified and Exalted Be He).
[Istiqbaal Shah’ru Ramadhaan’ page 30]