إِنْسَانٌ مَبْعُوثٌ مِنَ اللَّهِ مَعْصُومٌ عَنِ الْخَطَإِ مَفْرُوضُ الِاتِّبَاعِ
A Prophet is a human being sent by Allah, protected from error, whose obedience is obligatory.
The definition includes four characteristics:
1. Human — a Prophet is a created human being.
2. Sent by Allah — chosen and commissioned by Him.
3. Protected from error — guarded in the prophetic mission from sin and error.
4. Obligatory to follow — obedience to the Prophet’s divinely given guidance is required.