Bandha (also karma-bandha) in Jainism, is the mutual intermingling of the soul and karmas (fine matter).
[1] Bandha (Bondage) comes immediately after the asrava (influx of karmas).
[4] Champat Rai Jain, an influential Jain writer of the 20th century in his book The Key of Knowledge wrote:[5]The next thing to understand in this connection is the effect of the action of matter on the soul.
This is literally true; for the union of substances always tends to limit their natural functions, though new properties and faculties arise in consequence of it.
This is the bondage, meaning, as it does, the suspension and vitiation of the natural functions and properties of the soul-substance, which are held in check for the time being...The bondage is of four kinds according to the Tattvartha sutra (in shloka 8.3):[6]