In the Battle of Siffīn:
Muhammad b. al- Hanafiyya, the son of Imām 'Alī b. Abī Tālib, asked his father why he propelled him to attack the rebels and kept al-Hasan and al- Husayn back.
The Amīr al-Mu'minīn eloquently replied to him:
''You are my hand, they are my eyes. And every man protects his eyes with his hands''
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