Ibn Abbas, who said:
(This Is part of a longer Hadith.)
When the MESSENGER OF ALLAH (SAWW) achieved victory in the Battle of Khaibar, JAAFAR BIN ABI TALEB (Jaafar Al-Tayyar) (ASWS) returned from Habasha.
The MESSENGER OF ALLAH (SAWW) said, “I do not know what makes me happier: victory in Khaibar or the news of JAAFAR (ASWS) returning home.”
Ibn Abbas continued to narrate.
Jaafar (ASWS) had a maid that he gave to ALI BIN ABI TALEB (ASWS) as a gift. ALI (ASWS) freed her to please FATEMA (ASWS).
ALI (ASWS) also had five hundred DIRHAMS (silver coins) that he gave as charity to the needy from amongst the MUHAJERIN (immigrants of Makkah) and Ansar to please FATEMA (SA).
So Jibraeel came down to the PROPHET (SAWW) and said:
O MOHAMMAD (SAWW) ! ALLAH (SWT) sends His Salaam to you and says, ‘Give ALI (ASWS) the glad tidings that I have given Paradise completely to him for freeing the maid to please FATEMA (SA). On the Day of Judgement, ALI (ASWS) will stand at the door of Paradise and with My Mercy, he will take whomever he wants to Paradise, and will forbid whomever he wants from entering it with My Wrath.
And I have given Hell completely to ALI (ASWS) also for giving the five hundred Dirhams as charity to please FATEMA (SA). Therefore, on the Day of Judgement, ALI (ASWS) will stand at the door of Hell and will take whomever he wants (to Hell) with My Wrath, and he will forbid whomever he wants from entering it with My Mercy.’
Then the MESSENGER OF ALLAH (SAWW) said, “Well done, O ALI (ASWS)! Who can be like you?
You are the divider of Paradise and Hell.”
(Ref: Bihar Al-Anwar 39:208)