The Prophet said, “(On the Day of Resurrection) camels will come to their owner in the best state of health they have ever had (in the world), and if he had not paid their Zakat (in the world) then they would tread him with their feet; and similarly, sheep will come to their owner in the best state of health they have ever had in the world, and if he had not paid their Zakat, then they would tread him with their hooves and would butt him with their horns.” The Prophet added, “One of their rights is that they should be milked while water is kept in front of them.” The Prophet added, “I do not want anyone of you to come to me on the Day of Resurrection, carrying over his neck a sheep that will be bleating. Such a person will (then) say, ‘O Muhammad! (please intercede for me,) I will say to him. ‘I can’t help you, for I conveyed Allah’s Message to you.’ Similarly, I do not want anyone of you to come to me carrying over his neck a camel that will be grunting. Such a person (then) will say “O Muhammad! (please intercede for me).” I will say to him, “I can’t help you for I conveyed Allah’s message to you.”
Volume 2, Book 24, Number 486:
Narrated Abu Huraira:
Allah’s Apostle said, “Whoever is made wealthy by Allah and does not pay the Zakat of his wealth, then on the Day of Resurrection his wealth will be made like a bald-headed poisonous male snake with two black spots over the eyes. The snake will encircle his neck and bite his cheeks and say, ‘I am your wealth, I am your treasure.’ ” Then the Prophet recited the holy verses:– ‘Let not those who withhold . . .’ (to the end of the verse). (3.180).
Eid is celebration. Fitr comes from the word fitrah, meaning natural.
Yes, Ramadhan will end shortly, at 7.10 pm and we muslims will celebrate EidulFitri. But using the word 'celebration' gives a wrong idea to non-muslims. It's not partying. We are celebrating with praises of God. And we can eat as usual once more, coming back to the natural way of things. Hence, the name Fitrah.