Under the damaged dome of al-Albani Mosque in Khan Younis, families stood on broken stone and dust, raising their voices in takbir, the declaration of god's greatness, to mark the first morning of Eid al-Adha on Friday.

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.