IllustrativePhoto: Haytham Shtayeh/Flash 90

The main streets of Dhaka, the capital of Bangladesh, turned into rivers of blood yesterday (Tuesday).

The Muslim population of the city woke up early in the morning for prayers and sacrifices in honor of Eid al-Adha, the Islamic holiday of sacrifices. The ritual slaughter of the animals is conducted in local abattoirs where the blood from the sacrifices is collected. A combination of heavy rains and a problem in the drainage systems caused rivers of blood to form on the streets.

Eid al-Adha is considered the holiest of holidays for Muslims and brings with it the obligation on every Muslim to bring an animal sacrifice, eat its meat, and share it with others.

According to Islamic laws of ritual slaughter, one must wait until the animal has bled out completely and is entirely still before going about the process of taking apart its limbs.

In contrast with Jewish ritual slaughter, Islamic law allows for running the blade on the animals neck multiple times.