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

Riyad-us-Saliheen 482
'Uthman bin 'Affan (May Allah be pleased with him) reported: The Prophet (PBUH) said, "There is no right for the son of adam except in these (four) things: A house to live in, a cloth to cover therewith his private parts, bread and water."

[At-Tirmidhi]