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Reply of the Zaporozhian Cossacks is a historical tableau, set in 1676, exploiting the legend of the reply that the Cossacks sent the Sultan of the Ottoman Empire, Mehmed IV. The Cossacks of the Zaporozhian Host (from 'beyond the rapids', za porohamy), inhabiting the lands around the lower Dnieper River in Ukraine, had defeated Ottoman Turkish forces in battle. However, Mehmed demanded that the Cossacks submit to Turkish rule. The Cossacks, led by Ivan Sirko, replied in an uncharacteristic manner: they wrote a letter, replete with insults and profanities. The painting exhibits the Cossacks' pleasure at striving to come up with ever more base vulgarities. During Repin's time, the Cossacks enjoyed great popular sympathy. Repin also admired them: "All that Gogol wrote about them is true! A holy people! No one in the world held so deeply freedom, equality, and fraternity."

The text of the Sultan's letter to the Cossacks:

As the Sultan; son of Muhammad; brother of the Sun and Moon; grandson and viceroy of God; ruler of the kingdoms of Macedonia, Babylon, Jerusalem, Upper and Lower Egypt; emperor of emperors; sovereign of sovereigns; extraordinary knight, never defeated; steadfast guardian of the tomb of Jesus Christ; trustee chosen by God himself; the hope and comfort of Muslims; confounder and great defender of Christians—I command you, the Zaporozhian Cossacks, to submit to me voluntarily and without any resistance, and to desist from troubling me with your attacks.

—Turkish Sultan Mehmed IV

According to the legend, the reply was a stream of invective and vulgar rhymes, parodying the Sultan's titles:

Zaporozhian Cossacks to the Turkish Sultan!

Thou art a turkish imp, the damned devil's brother and friend, and a secretary to Lucifer himself. What the devil kind of knight art thou that cannot slay a hedgehog with your naked arse? The devil shits, and your army eats. Thou a son of a bitch wilt not ever make subjects of Christian sons; we have no fear of your army, by land and by sea we will battle with thee, fuck thy mother.

Thou art the Babylonian scullion, Macedonian wheelwright, brewer of Jerusalem, goat-fucker of Alexandria, swineherd of Greater and Lesser Egypt, Armenian pig, Podolian villain, catamite of Tartary, hangman of Kamyanets, and fool of all the world and underworld, a fool before our God, a grandson of the Serpent, and the crick in our dick. Pig's snout, mare's arse, slaughterhouse cur, unchristened brow, screw thine own mother!

So the Zaporozhians declare, you lowlife. Thou wilt not even be herding Christian pigs. Now we shall conclude, for we don't know the date and don't have a calendar; the moon's in the sky, the year in the book, the day's the same over here as it is over there; for this kiss our arse!

Koshovyi Otaman Ivan Sirko, with the whole Zaporozhian Host

The fact that this letter is not a true document of diplomacy of those times but a literary work has been demonstrated in numerous ways. The Cossacks never sent such documents to foreign countries in such a style. This can be seen in comparing archival materials of Cossack letters from various dates and content. Secondly, had this document been true, various variants would not exist. Thirdly, the variants have different dates (1600, 1619, 1620, 1667, 1696, 1713 and others). Moreover, there are different signatures under the letter: ataman Zakharchenko, Ivan Sirko, the Nyz Cossacks and so on. Finally, each of the variants are addresses to different people: Osman, Ahmet II, Ahmet IV, Mehmed IV, etc. All this points to the document having a literary origin which was taken up in folk culture or rooted in nationalistic sentiment.