The four Hīnayāna steps for attaining Buddhahood, i. e. the myriad deeds of the three asamkhyeya kalpas; the continually good karma of a hundred great kalpas; in the final body the cutting off of the illusions of the lower eight states; and the taking of one's seat on the bodhi-plot for final enlightenment, and the cutting off of the thirty-four forms of delusive thought.

A Dictionary of Chinese Buddhist Terms, William Edward Soothill and Lewis Hodous

四階成佛 [py] sìjiē chéngfó [wg] ssu-chieh ch'eng-fo [ko] 사계석불 sagyesŏngbul [ja] シカイジョウブツ shikaijōbutsu ||| The 'four stages in the attainment of buddhahood': (1) The myriad practices of the three great incalculable eons; (2) The hundred kalpas practice of good marks; (3) The cutting off of doubts in the first eight bhūmi; (4) Sitting in meditation and arising the 34 mindfulnesses to cut off all non-conceptual doubts and become a Buddha.

[Dictionary References] [Credit] cmuller(entry) cwittern(py)