“Allah will not be merciful to those who are not merciful to people.”

Riyadh-as-Saliheen by Imam Al-Nawawi, volume 3, hadith number 355
Sunni Hadith

Beware of Pity (1939)

Riyadh-as-Saliheen by Imam Al-Nawawi, volume 4, hadith number 615
Sunni Hadith

2011, Address on interventions in Libya (March 2011)
Context: Ten days ago, having tried to end the violence without using force, the international community offered Qaddafi a final chance to stop his campaign of killing, or face the consequences. Rather than stand down, his forces continued their advance, bearing down on the city of Benghazi, home to nearly 700,000 men, women and children who sought their freedom from fear.
At this point, the United States and the world faced a choice. Qaddafi declared he would show “no mercy” to his own people. He compared them to rats, and threatened to go door to door to inflict punishment. In the past, we have seen him hang civilians in the streets, and kill over a thousand people in a single day. Now we saw regime forces on the outskirts of the city.  -->

The mutual love between Allah and His servants http://english.bayynat.org.lb/Doctrines/Themutual1.htm

Last words, as quoted in De Vader des Vaderlands (1941) by W. Berkelbach van der Sprenkel, p. 29
Variants:
O my God, have mercy on this poor people.
My God, have pity on my soul; my God, have pity on this poor people.
My God, have mercy on my soul and on these poor people.
My God, have pity on my soul; I am badly wounded. My God, have pity on my soul and on this poor people!

Variant translation:
Awaken your heart to kindness and mercy for the people and love and tenderness for them. Never, never act with them like a predatory beast which seeks to be satiated by devouring them, for the people fall into two categories: they are either your brethren in faith or your kindred in creation.
Nahj al-Balagha, Letter 53: An order to Malik Al-Ashtar

Fiction, Napoleon Symphony (1974)