The material below is Open Game Content from a 3PP Source
School enchantment (compulsion) [language-dependent, mind-affecting]; Level bard 6, cleric 6, inquisitor 5, sorcerer/wizard 6, witch-4wfg 6, witch 6
Casting Time 10 minutes
Target one living creature
Saving Throw none; Spell Resistance yes
This spell functions similarly to lesser geas, except that it affects a creature of any HD and allows no saving throw.
If the subject is prevented from obeying the geas/quest for 24 hours, it takes a –3 penalty to each of its ability scores. Each day, another –3 penalty accumulates, up to a total of –12. No ability score can be reduced to less than 1 by this effect. The ability score penalties are removed 24 hours after the subject resumes obeying the geas/quest.
A remove curse spell ends a geas/quest spell only if its caster level is at least two higher than your caster level. Break enchantment does not end a geas/quest, but limited wish, miracle, and wish do.
Bards, sorcerers, and wizards usually refer to this spell as geas, while clerics and witches call the same spell quest.