Hebrew, "fringe." knotted ritual fringes, or tassels, worn in antiquity by Israelites. They are typically white strings with a blue thread to represent that Israel is a kingdom of priests and priestesses. The purposes of this instruction is that of a daily reminder to bring God's love into action. The white thread may represent purity, as we are made pure by God's grace. The blue likely representing the sapphire tablets, the stone God wrote the Law upon. However, the Book of Remembrance states that the white represents a "white [seer] stone" and "the sea of wisdom (Book of Remembrance 31:15).
See 4 Moses 7:23-26, 22:14, 32:7; 5 Moses 17:21-26, 23:12; Numbers 15:37-41; Deuteronomy 22:12; Book of Remembrance 26:11; Doctrines of the Saints 114:30, 124:9-10; Chesed, Yesod.