Jiāzhānyánzǐ 迦栴延子 (Skt. Kātyāyanīputra, “son of Kātyāyanī”; also written 迦多衍尼子 Jiāduōyǎnnízǐ; DILA Authority A000882) was the Sarvāstivāda Abhidharma master traditionally credited with composing the Jñāna-prasthāna 發智論 (阿毘達磨發智論, KR6l0009, T1544), the foundational “body text” of the Sarvāstivāda Abhidharma canon. Dào’ān’s preface to the related Aṣṭagrantha translation (KR6l0008) describes him as “義第一” (yì dì-yī, “foremost in interpretation”) and states that “after the Buddha’s nirvāṇa, Kātyāyanīputra, finding the ten-part sutras vast and difficult to master, compiled the Great Dharma into a single corpus of eight divisions and forty-four chapters.”
His dates are entirely unknown. The traditional Sarvāstivāda account places his Jñāna-prasthāna three to five hundred years after the Buddha’s nirvāṇa — that is, roughly in the range 2nd century BCE to 1st century CE. Modern scholars (Frauwallner 1995; Willemen, Dessein, Cox 1998) tentatively situate the composition of the Jñāna-prasthāna in the period c. 2nd century BCE to 1st century CE, coinciding with the early flourishing of the Sarvāstivāda school in Gandhāra and Kaśmīra. The Aṭṭhagrantha recension of the text (T1543) preserves what may be an earlier Gandhāran version, while Xuánzàng’s T1544 renders the standard Kaśmīra Sanskrit Jñāna-prasthāna.
Works in the Kanripo corpus: KR6l0008 阿毘曇八犍度論 (T1543); KR6l0009 阿毘達磨發智論 (T1544).