Excellence of Leading an Ascetic Life, and Virtues of Simple Life

Riyad-us-Saliheen 458
Abu Sa'id Al-Khudri (May Allah be pleased with him) reported: Messenger of Allah (PBUH) sat on the pulpit and we sat around him. He said: "What I am concerned most is the flourishment and the beauty of this world will be available to you".

[Al-Bukhari and Muslim]