What injustice occurs after the death of King nare maghan

With the death of King Nare Maghann Konate, his firstborn son, Dankaran Tuman, assumed the throne despite the the king's wishes that the prophecy should be respected (The prophecy wherein if he marries an ugly woman, she will bore him a son who will become a great king). Sundiata and his mother, suffered scorn of the new king and his mother.