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.

These are the Days of Eid – make takbir wherever you are … Allahu akbar!” Muslims are now celebrating the blessed days of Eid ul-Adha, we are encouraged to raise our voices in Takbir –