A han bu, Ā hán bù: 4 definitions

[The following represents an unverified English translation. For all purposes consult the original Chinese text.]

阿含部 [a han bu]—Āgama Section — [Term (術語 [shu yu])] This refers to the division or section of the Āgamas (阿含 [a han]). Originally, it was a general term for all Buddha's teachings (佛說 [fu shuo]). Later, with the rise of Mahayana scriptures (大乘經 [da cheng jing]), any scripture bearing the name "Āgama (阿含 [a han])" came to be collectively termed Hinayana (小乘 [xiao cheng]), thus becoming an alternative name for Hinayana scriptures (小乘經 [xiao cheng jing]). Northern Buddhism (北方佛教 [bei fang fu jiao]) refers to the Dīrgha-āgama (长 [zhang]), Madhyama-āgama (中 [zhong]), Saṃyukta-āgama (杂 [za]), and Ekottara-āgama (增一 [zeng yi]) as the Four Āgamas (四阿含 [si a han]). These Four Āgamas and texts belonging to them are collectively called the Āgama Section. What is transmitted in the South (南方所傳者 [nan fang suo chuan zhe]), in addition to the Four Āgamas, refers to the Hinayana miscellaneous sections (小乘雜部 [xiao cheng za bu]) as the Kṣudraka-āgama (屈阤迦阿含 [qu zhi jia a han]), thus forming the Five Āgamas (五阿含 [wu a han]). The Yuan Dynasty Catalogue (元錄 [yuan lu]) lists 111 texts in 337 fascicles under this category. The note states: "Translated from both singular and composite texts, the branches and sub-sections of the Āgama Section are separately circulated and compiled here." The Ming Dynasty Tripitaka Catalogue (明藏目錄 [ming cang mu lu]) lists 137 texts referred to as the Hinayana Āgama Section (小乘 [xiao cheng]). Furthermore, in the Pali Canon (巴利聖典 [ba li sheng dian]) transmitted in the South, apart from the Four Āgama Sūtras, 15 sections of the Kṣudraka-āgama currently exist.