Decisive-support condition. This acts by virtue of its cogency. It is of three kinds:
By way of an object (aaramma.na upanissaya paccaya). The image of the Buddha, at the time of veneration, forms an object decisive support condition for the establishment of faith by way of conviction.
Proximate decisive support (anantara upanissaya paccaya). When one thought gives way to the next, the conviction in one stands as a decisive support for the thought that follows.
Natural decisive support (pakati upanissaya paccaya). Faith, virtue, generosity, and learning, by way of cogency, stand as natural decisive supports for the repeated arising of these wholesome factors. A good environment and companionship with the wise are natural decisive supports for wholesome mental states.
These three types of decisive support conditions have a bearing on our practice if we wish to fulfill the four preliminary conditions to stream entry (sotaapattiyanga). These are: (i) companionship with those of merit and good character (sappurisa sa.mseva); (ii) hearing the Dhamma (saddhamma savanna); (iii) wise reflection (yoniso manasikaara); and (iv) living in conformity with the Dhamma (dhammaanudhammapatipatti).