“Our enemy is the enemy of my grandfather, Muhammad.”
al-Shahid al-Tustari, Ihqaqul-Haq, vol.11, p. 592
Regarding the Advent of Karbalā
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Husayn ibn Ali 32
The grandson of Muhammad and the son of Ali ibn Abi Talib 626–680Related quotes

Majlisi, Bihārul Anwār, vol.44, p. 329
Regarding the Advent of Karbalā

“If the enemy of my enemy is my friend, then surely you should be friend to my friend.”
Source: The Coldest Girl in Coldtown

“The enemy of my enemy is my friend, so that makes Google my best friend.”
Quoted in Miguel Helft, " Google and Salesforce Join to Fight Microsoft http://www.nytimes.com/2008/04/14/technology/14google.html?_r=1&oref=slogin", New York Times (April 14, 2008).

“However, it has long been said that "my enemy's enemy is my friend.”
Source: Abraham Lincoln: Vampire Hunter

1960s, The American Promise (1965)
Context: For Negroes are not the only victims. How many white children have gone uneducated, how many white families have lived in stark poverty, how many white lives have been scarred by fear, because we have wasted our energy and our substance to maintain the barriers of hatred and terror? So I say to all of you here, and to all in the Nation tonight, that those who appeal to you to hold on to the past do so at the cost of denying you your future. This great, rich, restless country can offer opportunity and education and hope to all: black and white, North and South, sharecropper and city dweller. These are the enemies: poverty, ignorance, disease. They are the enemies and not our fellow man, not our neighbor. And these enemies too, poverty, disease and ignorance, we shall over, come.

“We should support whatever our enemies oppose and oppose whatever our enemies support.”
Fánshì dírén fǎnduì de, wǒmen jiù yào yǒnghù; fánshì dírén yǒnghù de, wǒmen jiù yào fǎnduì.
If the enemy opposes, we must support it; if the enemy supports it, we must oppose it.
Chapter 2 https://www.marxists.org/reference/archive/mao/works/red-book/ch02.htm, originally published in Interview with Three Correspondents from the Central News Agency, the Sao Tang Pao and the Hsin Min Pao (September 16, 1939), Selected Works, Vol. II, p. 272.
Quotations from Chairman Mao Zedong (The Little Red Book)

Jasper Ridley, Tito: A Biography (Constable and Company Ltd., 1994), p. 323.
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