一切經音義 9.24

9.24

六栽（作才反經中亦名觸案觸能長養心數法栽能長養枝葉花條其義相似因以名焉）。

Liuzai (六栽, fanqie 作才 [z/cai]). In the scriptures it is also called touch (sparśa). Note that touch can nourish mental factors (caittas), just as saplings (栽) can nourish branches, leaves, and flowering twigs; because their meaning is similar, it was named after this.