B1noun
مُصِيبَةٌ
muṣībah
calamity / affliction / trial
Example
مَا أَصَابَ مِنْ مُصِيبَةٍ إِلَّا بِإِذْنِ اللَّهِ
mā aṣāba min muṣībatin illā bi-idhni Allāh
No disaster strikes except by permission of Allah (64:11)
Grammar
Active participle (feminine) used as noun. From أَصَابَ (to strike/befall). Plural: مَصَائِبُ (maṣāʾib). Literally 'that which strikes/hits.'
Culture
Trials in Islam are not random — they come by God's permission and carry purpose: purification, elevation, or returning to God.