Did the prophet have a gap in his teeth?

Yes, the prophet had a gap between his incisors.

According to the provided reference, the prophet had specific physical characteristics, including:

• Nose: A long, slightly arched nose that seemed to shine.
• Mouth: A wide mouth.
• Teeth: White teeth with a gap between the incisors.

This information is based on observations about his physical appearance. The prominent detail relating to the question is the noted gap between his front teeth.