What is the liability if both retracting witnesses claim they both intended the act, but each accuses the other of making a mistake?

Primary text

If each witness claims intent but is unsure of the other's intent, Qisas is due from both because each admits to their own intent. Alternatively, Qisas may be waived because if each admission were made in isolation, it would not necessitate Qisas, and a person is judged only by their own admission.