Feeding others has the most reward on Eid-e-Ghadir than any other day. Imam Ali (as) has said that giving one person food on Eid-e-Ghadir is like feeding one million prophets!
Here are some traditions from Imam Sadiq (as) narrating the importance of this day:
This is the greatest Eid of Allah, and every Prophet appointed by Allah celebrated this day as an Eid and knew the sanctity of this day.1
He [Imam Ali] fasted on this day as a sign of thanks to Allah, the Glorious and Noble. This day should be taken as one of fasting, feeding others, establishing ties with brothers and on this day is the pleasure of the Most Merciful and the rubbing in the dust (humiliation) of the face of Shaitan.2
The worth of (good) actions performed on this day is equivalent to 80 months (of good deeds) and one is advised to frequently remember Allah, the Noble and Grand, and send prayers upon the Prophet (blessings of Allah be upon him and his family) and that a man be generous to his family (by presenting them with gifts).3
This is the day of worship and prayers and thanks to Allah and His praise, and is a day of happiness due to the obligation which Allah has laid upon all of you in regards to our (the Ahlul Bait’s) Wilayat, and surely I love to see you fast on this day.4
Fasting on the Day of Ghadir is equivalent to fasting the time span of the (existence of the) entire world – meaning that if a person were to live a life of the entire existence of the world and were to fast this whole time, the reward for this fasting would be equivalent to fasting (this one day of Ghadir).5
REFERENCES:
- Wasa’il ash-Shi’a, Volume 5, Page 224, Hadith 1E
- Wasa’il ash-Shi’a, Volume 7, Page 328, Hadith 12
- Wasa’il ash-Shi’a, Volume 7, Page 325, Hadith 6
- Wasa’il ash-Shi’a, Volume 7, Page 328, Hadith 13
- Wasa’il ash-Shi’a, Volume 7, Page 324, Hadith 4