Adha, a period of "communal enjoyment" for Muslims worldwide, has officially arrived. Here's what we've learned about the Islamic holiday.

Adha, the second significant Islamic festival, on the 10th day of Dhul Hijjah. This year, Arafat Day was observed on June 5. The festival commemorates Prophet Ibrahim's willingness to sacrifice for God and involves the heartfelt intention of Qurbani.

Less spending, higher prices and fewer animal sacrifices subdued the usual festive mood as the Muslim holiday of Eid al-Adha was celebrated in many parts of the world.