uncontrollable worldly desires; restless passions
A yojijukugo describing a state where one's mind and desires are as restless as a monkey and a horse, unable to be controlled. Often used in Buddhist or literary contexts.
When your mind is full of restless desires, you can't concentrate on studying.
A yojijukugo derived from classical Chinese literature, literally 'heart monkey, mind horse', symbolizing the restless and uncontrollable nature of human desires.