In Mandaeism, Ná¹£ab (, ) is an uthra (angel or guardian). He is also called Ná¹£ab Rba ("the Great Ná¹£ab") or Ná¹£ab Ziwa ("the Radiant Ná¹£ab" or "Splendid Plant"). Ná¹£ab and Anan-Ná¹£ab ('cloud of Ná¹£ab', a female consort) are frequently mentioned together as a pair in the Right Ginza and Qulasta.
In chapters 3 to 10 of the Mandaean Book of John, Ná¹£ab is a son of Yushamin.
In the fourth chapter, Ná¹£ab Ziwa () admonishes his father Yushamin over his rebellion.
The eighth chapter gives an account of Ná¹£ab bringing a petition for forgiveness for Yushamin to the King of Light (malka á¸Â-nhura), who accepts it against the wishes of Manda d-Hayyi, and cautions the latter for hating Yushamin for refusing him a wife. The ninth is a dialogue between Yushamin, Manda d-Hayyi and Ná¹£ab; the tenth is a monologue by Yushamin.
Ná¹£ab is mentioned in chapters 8 and 17.1 of the Right Ginza. He is also mentioned in Qulasta prayers , , 105, , , , 353, and 379.
In the Baptism of Hibil Ziwa (DC 35), Ná¹£ab is the name of a heavenly tree.