• Mahādhammasamādāna Sutta

On professions and living up to them. There are four ways of professing a Doctrine:

• the first is unpleasant at the time and ripens to pain thereafter,
• the second is pleasant at the time but also ripens to pain,
• the third is unpleasant at the time but ripens to pleasure,
• while the fourth is pleasant both at the time and thereafter.

The Buddha then explains in detail these four classes of profession. M.i.309 17.