In observing his resting habits and his wakefulness, one learns one of the best, the most balanced, and the healthiest practices. After offering his night (‘ishã) prayers, God’s Messenger صلى الله عليه و سلم used to retire in the early part of the night to wake up later on at the beginning of the second half of the night. Upon waking up, he was particularly ceremonial about cleaning his teeth with a miswãk* before taking his ablution for prayers. God’s Messenger صلى الله عليه و سلم would then pray at home until he heard the first call to prayer before he walked to the mosque and led the believers in the congregational dawn (fajr) prayers. His rest was most balanced and sufficient for the body to collect its energies and vitality before giving its share of blessings by bringing it to stand before its Lord and bow to Him. After dawn, if he felt a little tired, he then allowed an interval of short rest, lying on his right side, and invoking God’s attributes until he was overcome by a short nap. God’s Messenger صلى الله عليه و سلم never slept on a full stomach. He never allowed for a raised bed, and he usually slept on a floor mattress filled with tufts of palm fibers, and he used a pillow of the same filling, and sometimes, he laid his head on his right hand.
*Miswãk: Dittender wood > (S. Lepidium); also a short wooden stick made of Salvadora Indiea tree and has a bitter taste. Nowadays is found as toothpaste.