Manusmriti

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धान्येऽष्टमं विशां शुल्कं विंशं कार्षापणावरम् । कर्मोपकरणाः शूद्राः कारवः शिल्पिनस्तथा ॥ १२० ॥

sanskrit

(Viz.) from Vaisyas one-eighth as the tax on grain, one-twentieth (on the profits on gold and cattle), which amount at least to one Karshapana; Sudras, artisans, and mechanics (shall) benefit (the king) by (doing) work (for him).

english translation

dhAnye'STamaM vizAM zulkaM viMzaM kArSApaNAvaram | karmopakaraNAH zUdrAH kAravaH zilpinastathA || 120 ||

hk transliteration by Sanscript