Mishneh Torah — Positive Mitzvot מצוות עשה, Chapter 14
The full Hebrew text of Mishneh Torah, Positive Mitzvot, Chapter 14, with English translation by Maimonides (Rambam).
לַעֲשׂוֹת צִיצִית, שֶׁנֶּאֱמָר: "וְעָשׂוּ לָהֶם צִיצִת" (במדבר טו, לח).
To make tzitzit, as [Numbers 15:38] states: "And you shall make tzitzit for them."