An arhan and a Buddha, cultivators of the method of exit from the

saha world, both realize nirvana with no remaining karma for suffering.

The two, however, are dissimilar in practice. The Buddha, being of the

Mahayana, cultivates though three great asankhya kalpas, dwells not

in nirvana, but undertakes to deliver all living beings. The arhan, of the

Hinayana, realizes the Way on completion of four fruits in duration,

and returns no more to the saha world to deliver all living beings.

The Buddha and arhan, on realization of nirvana with no remaining

karma for suffering, differ in time frame and method as much as how

they deliver all living beings. The only common ground shared between

them is that they both traverse and transcend the three realms and

become liberated from transmigrating through rebirths and redeaths.