From Biharul-Anwaar, vol.40 p.46…
In his Isnad narrating from Hadhrat Salman, Salman al-Farsi (May Allah be pleased with him) said:
“We were sitting with the Messenger of Aen a Bedouin entered. He stood up in front of us and said: “Assalamu Alaykum”. We replied back. He then asked:
We said: ‘Yes.’
The Prophet said: ‘O Arab brother! Have a seat.’
He replied: ‘O Mohammad! I did believe in you before I met you and acknowledged you before I see you, except a matter narrated to me from you.
The Prophet said: ‘And what is that?’ The Bedouin said: ‘You invited us to bear witness that there is no deity but Allah, and that Mohammad is the messenger of Allah. We then agreed. You then invited us to Salaat, Zakat, Fasting and Hajj and we accepted those. You then were not satisfied with us until you invited us to obedience for your cousin; Ali bin Abi-Talib and his love. Did you make this compulsory on us or God from the heaven has made it compulsory?’
The Prophet said: ‘Rather, Allah made it compulsory for inhabitants of heavens and earth.” When the man heard of that Prophetic statement he said: “I hear and obey for the sake of Allah O Messenger of God! As it is truly from our Lord.’
The Prophet (SAWW) then added: ‘O Arab brother! I was given in Ali five qualities that even one of them is better than this world and what it contains.
Do you not like me to inform you about them, O Arab brother?’
‘Yes O Messenger of God’, replied the man.
The Prophet then said: ‘I was sitting on the day of the Battle of Badr and the war had just come to an end, then Gabriel (peace be upon him) descended and said: ‘God the Exalted sends you al-Salaam and says for you: ‘O Mohammad I swear in My Majesty that I do not reveal the love for Ali bin Abi-Talib save to those whom I love. Thus, whoever I love, I shall reveal to them Ali’s love, and whoever I hate I shall reveal to them their hatred for Ali.’
O Arab brother! Should I not inform you of the second one?’
‘Yes O messenger of Allah’, said the Arab.
The Prophet (SAWW) said: ‘I was sitting after I finished from the burial of my uncle Hamzeh (after the Battle of Ohod), then Gabriel descended and said: O Mohammad! Allah sends you al-Salaam and says for you: ‘Indeed I made Salaat compulsory, but I excused the menstruating women, the insane and the children. I made fasting compulsory; yet I exempt a traveller from it. I made Hajj compulsory, but I excused an ill person. I made Zakat compulsory; yet exempt the poor from it. But I made the love for Ali ibn Abi-Talib compulsory on the inhabitants of the heavens and the earth, and did not give any excuse to anyone.’
O Arab brother! Do you want me to tell you about the third one?’
‘Yes, indeed O messenger of God’, said the Arab.
The Prophet (SAWW) said: ‘God did not create anything unless He made a master in it. The eagle is the master of the birds. The bull is the master of beasts. The lion is the master of wild animals. Friday is the master of the days of the week. Ramadan is the master of the months. Israfil is the master of the angels. Adam is the master of the humans. I am the master of the Prophets and Ali is the master of successors.
O Arab brother! Do you want me to inform you about the fourth one?’
‘Yes, please O messenger of God’, said the Arab man.
The Prophet (SAWW) said: ‘The love of Ali ibn Abi-Talib is a tree whose root is in Paradise and its branches are in this world. Whoever from my community clings onto any of its branches, it will reach them to Paradise. The hatred of Ali ibn Abi-Talib is a tree that its root is in hell and its branches are in this world. Whoever clings onto any of its branches will enter into hell.
O Arab brother! Should I not inform you of the fifth one?’
‘Yes of course, O messenger of God’, said the man.
The Prophet (SAWW) then said: ‘On the Day of Judgment, a pulpit will be placed for me on the right side of the Throne. Then another pulpit will be placed for Ibrahim (peace be upon him) adjacent to mine on the right side of the Throne. Then a bright high and dominating Chair will be brought known as the Chair of Honor. It will be placed for Ali between my pulpit and the pulpit of Ibrahim (peace be upon him). Then my eyes will have never seen a better friend between two bosom friends.
O Arab brother! The love for Ali ibn Abi-Talib is true, then you shall love him. Indeed Allah will love those who love him and he is with me on the Day of Judgment. Ali and I are in the same part (of Paradise).’
Upon hearing that, the Arab man said: ‘I hear and obey Allah, his messenger and your cousin Ali ibn Abi-Talib.’”