The Messenger of Allah (s.a.w.a.) informed: Allah has given preference to me by honouring me with Prophethood. Allah has given preference to Ali by honouring him with Imamate. Allah ordered me to marry Ali (a.s.) to my daughter. Then Ali (a.s.) is the father of my sons. Ali (a.s.) will perform the ritual bath on me after my death and he will repay my debts. Ali’s (a.s.) friends are my friends and Ali’s (a.s.) enemies are my enemies.
Bashaarah al-Mustafa Le Shiah al-Murtaza v 2 p 146 Behaar al-Anwaar v 38 p 140