Being jealous of raised status of Mola Ali a.
Abul Fida, Ibn Athir and Ibn Khallikan depict him as an heretic and wily tyrant.
His clothes were simple, made chiefly of wool, and chose to ride on an ass.
However, the academy was destroyed by Afzal Shahin Shah, the son of Badr al-Jamali.
Badr al-Jamali, however, wanted to see Mustaali, the younger son of the Imam as the next Imam.
Thus, Yahya faced difficulties in the field.