“Dedication and exhaustion have their rewards; either in this world, in the hereafter, or in both. The most content people are the most exhausted, and the most exhausted people are the most at peace. Authority in this world and happiness in the next cannot be arrived at except through the bridge of exhaustion. Yahya b. Abi Kathir said, “Knowledge cannot be attained with a rested body!”
-Ibn Qayyim al-Jawziyyah
[Tuhfatul Mawlud, p242]