Qurbani is the sacrifice of an animal during the festival Eid ul Adha. The significance of this relates to the event that took place during the time of Prophet Ibrahim Alayhissalam. This is when he in a dream was commanded to sacrifice his son for Allah. After much deliberation, he finally set out to sacrifice his beloved son. We must remember Ibrahim waited many years to finally have a son. He was 86 years old when his son was born so one can imagine the love he had for his son. And to now sacrifice him.
Some of the most important days of the year are the first 10 days of Dhul Hijjah. In Surah Al-Fajr, Allah swears by the 10 nights. Scholars are in agreement, this relates to the first ten nights of Dhul Hijjah. We often see Allah swearing by magnificent phenomenon in the Quran, this in turn gives more weight to the verses to follow. Allah is swearing by these first ten nights. These nights are not to be taken lightly.