3-194 (The compiler of the book narrated) that his father - may God be pleased with him - narrated that Muhammad ibn Yahya al-Attar quoted Muhammad ibn Ahmad, on the authority of Musa ibn Umar, on the authority of Ibn Abi Umayr, on the authority of Muawiyah ibn Ammar, on the authority of Aba Abdullah as-Sadiq (MGB),

“Three things will make you obese and three things will make you skinny. The three things which will make you obese are: taking a bath often, smelling good scents and wearing soft robes. The three things that will make you thin are eating a lot of eggs, fish and fresh dates.”The compiler of the book said, “What is meant by ‘taking a bath often’ is taking a bath every other day. Should you take a bath every day you would lose weight.”