Warning: This is 3.0 Edition material. It is possible that there is more recent 3.5 Edition version.
Inaccurate?

Healthful Slumber

(Song and Silence: A Guidebook to Bards and Rogues)

Conjuration (Healing)
Level: Bard 3,
Components: V, S, AF,
Casting Time: 10 minutes
Range: Close (25 ft. + 5 ft./2 levels)
Target: Living creatures within range
Duration: 1 day
Saving Throw: Will negates (harmless)
Spell Resistance: Yes (harmless)

Healthful slumber doubles the subjects' natural healing rate.
Each affected creature regains twice the hit points it otherwise would have during that day, depending on activity level.
Focus: The caster's instrument.