四分律行事鈔資持記 3.494

3.494

量中，初科又三，初示三品。上下之間，即為中品。此下，二定斗不同，初取周斗。注指俗法者，《孫子算經》十粟為圭，十圭為抄，十抄為撮，十撮為勺，十勺為合，十合為升，十升為斗，十斗為斛。相因增法，示可準據。準下，三會唐斗。唐朝雜令用姬周三斗為一斗。今此俗中例用唐斗，宜準為量。

In the measure, the first section again has three: first, the three grades are indicated. Between the upper and lower is the middle grade. From "This" onward, the second [part] establishes the differences in bushels (*dǒu*), first taking the Zhou bushel. The note pointing to secular methods refers to Master Sun's *Mathematical Classic*: ten grains of millet make a *guī*, ten *guī* make a *chāo*, ten *chāo* make a *cuò*, ten *cuò* make a *sháo*, ten *sháo* make a *hé*, ten *hé* make a peck (*shēng*), ten *shēng* make a bushel (*dǒu*), and ten *dǒu* make a picul (*hú*). These multiplying increments show what may be relied upon as a standard. According to what follows, the third [part] reconciles this with the Tang bushel. The miscellaneous statutes of the Tang dynasty take three bushels of the Ji Zhou as one bushel. Nowadays in secular practice, the Tang bushel is conventionally used, and it is proper to rely on it as the measure.