Somaliweyn,
You're confusing Zakat & Zakatul-fitr.
Ibn Umar (may Allaah be pleased with them both) said: "The Messenger of Allaah (peace and blessings of Allaah be upon him) made giving a saa' of dates or a saa' of barley as Zakaat al-Fitr an obligation for all Muslims, slave and free, male and female, young and old, and ordered that it should be given before the people went out to pray (Salaat al-Eid)." (Al-Bukhaari, 1503).
By today's estimation 1 saa' is the equivelent of 3 kilograms.
The whole purpose of this Zakat is so that the poor Muslims can enjoy Eid along with everyone else. The other type of Zakat is obligatory only if your wealth reaches a certain bracket and its paid annually.
