10th of Muharram (عاشُوراءُ)
أصول الفقه
المعنى الاصطلاحي :
The tenth day of the month of Muharram (first month in the Islamic calendar).
التعريف اللغوي المختصر :
"‘Aashooraa": the tenth day of the "hijri" month of Muharram; may also refer to the ninth day.