The Challenge of Mubahala: Invoking God's curse upon those who deny the truth after clear evidence.
If anyone disputes the truth after knowledge has come, the Prophet is commanded to gather family and invoke God's curse upon the liars (the challenge of *Mubahala*). Defend the truth rigorously. When facing determined falsehood, be willing to defend the truth with the utmost sincerity and seriousness, relying on God's final judgment.