)of the Masmuda tribal sheikhs, unwilling to see the balance in the Almohad coalition swinging into the hands of the Almohads of Spain, invoked their constitutional role, and refused to ratify al-Adil's usurpation, rallying instead around the figure of his nephew Yahya, the son of al-Nasir.With the coup in danger of being reversed, Abdallah al-Adil made the fateful decision to begin shipping the bulk of the Almohad forces in Spain across the straits to Morocco, intending to march on Marrakesh and imposing himself on the sheikhs.