on page 8:
” It is also related from Ali that he said: ‘Faith has four pillars - Patience, Firm Belief, Equity and Jihad.’
And from him also it is related that he said: ‘Fight in the way of Allah with your hands, but if you cannot, fight with your tongues, and if you cannot, fight with your hearts.’ “
Quote from the book: The kitab al-jihad from qadi nu man’s da a im al-islam translated with introduction ...
G. Salinger, 1953
GK Chesterton, 1917