Sayyiduna al-Hasan bin Ali (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings be upon him) ascended the pulpit on the day of the Battle of Tabuk, praised Allah and extolled Him, then said: "O people! By Allah, I command you only with what Allah has commanded you, and I forbid you only from what Allah has forbidden you. So be moderate in seeking (provision). By the One in whose hand is the soul of Abu al-Qasim, the provision of each one of you seeks him just as his appointed death seeks him. So if any of it becomes difficult for you, then seek it through obedience to Allah, the Mighty and Majestic."
Hadith Referenceالمعجم الكبير للطبراني / باب الحاء / 2724