The fixed number of perfections based on high status
To fully complete the greatly effective bodhisattva deeds you need an immeasurable long succession of lifetimes. Moreover, to attain quick success on the path within these lifetimes you need a life excellent in every aspect. Our present life is not excellent in every aspect but rather has only some of the aspects of full excellence; we do not make progress with it though we practice the teachings. You need a life that has four kinds of excellence: (1) resources to use [the result of the perfection of generosity], (2) a body with which you act [the result of the perfection of ethical discipline], (3) companions together with whom you act [the result of the perfection of patience], and (4) work that you are able to accomplish once undertaken [the result of the perfection of joyous perseverance]. Since in many cases these four kinds of excellence alone may themselves become conditions for afflictions, you must not fall under the control of the afflictions [the result of the perfection of meditative stabilization]. As just the four kinds of excellence are not sufficient, you must also distinguish well, in regard to what to adopt and what to cast aside, precisely what things to do and to stop doing [the result of the perfection of wisdom]. Otherwise, just as a bamboo or plantain tree dies after giving fruit, or a mule dies with pregnancy, you will be destroyed by the four excellences.
Lama Tsongkhapa (LRCM)