Mohammad bin Saeed Al-Dehqan narrated from Mohammad bin Masoud, from Ahmad bin Isa Al-Alawi, from Husain from Abi KhALId and Zaid bin Ali , from his father (4th Imam) (ASWS), from HUSAIN bin ALI (ASWS) , from the COMMANDER OF THE BELIEVERS (ASWS), who said:
I (Imam ALI (ASWS) ) went to the PROPHET (SAWW) when he was in one of his houses. I asked his permission to enter and he granted it. When I entered, the PROPHET (SAWW) asked me, “O ALI (ASWS) ! Do you not know that my house is your house? Why do you seek permission to enter?”
I replied, “I like to do that.”
The PROPHET (SAWW) said: You like what ALLAH (SWT) likes and you use His manners.
O ALI (ASWS) ! Do you not know that you are my brother, and my Creator did not want me to have a brother other than you? O ALI (ASWS) ! You are my heir, and you will be oppressed and wronged after my death.
O ALI (ASWS) ! Those who are devoted to following you are like those who live with me (in my place in Paradise), and those who abandon you, abandon me. O ALI (ASWS) ! Those who think that they love me but hate you, lie because ALLAH (SWT) created me and you from the same light.
(Ref : Ghayatol Maram Page 18 Hadees no.114)