"Hammad ibn Salamah narrated to us, from Hisham ibn ‘Urwah, from his father, that ‘Aishah — may Allah be pleased with her — said: 'The family of Muhammad (peace be upon him) never ate their fill of barley bread for three consecutive days from the time he came to Medina until his death.'"
: Teaches that true asceticism is not just about poverty or wearing scruffy clothes, but about detaching the heart from the world even if the hand possesses wealth. Critical Analysis kitab az zuhd imam ahmad pdf
"The world is a prison for the believer and a palace for the disbeliever." (Kitab Az-Zuhd, p. 23) "Hammad ibn Salamah narrated to us, from Hisham
While the full 3,000+ reports are rarely translated in one volume, selections titled The Book of Asceticism are available through publishers like Dar as-Sunnah Archive.org specific chapter of Imam Ahmad to go along with your reading? The Leaves of Sincerity
The Leaves of Sincerity