Source: Last Men in London (1932), Chapter I: The World of the Last Men.
“Verily Allah has enjoined goodness to everything; so when you kill, kill in a good way and when you slaughter, slaughter in a good way. So every one of you should sharpen his knife, and let the slaughtered animal die comfortably.”
Narrated in Saheeh Muslim, Book 021, Number 4810
Sunni Hadith
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Muhammad 312
Arabian religious leader and the founder of Islam 570–632Related quotes
" Morals, Reason and Animals: Steve Sapontzis Interviewed by Claudette Vaughan https://web.archive.org/web/20100114161007/http:/www.abolitionist-online.com/08_steve_sapontzis.shtml", Abolitionist Online (2009)

The Decline and Fall of Practically Everybody (1950), Part I: It Seems There Were Two Egyptians, Hatshepsut

Quote about Italy’s 1935 invasion of Ethiopia in Socialism and Superior Brains: The Political Thought of Bernard Shaw by Gareth Griffith (1993) p. 267.
1920s

The Yoga of Nutrition, Editions Prosveta, 2012 ebook edition, pp. 24 https://books.google.it/books?id=jnoVCwAAQBAJ&pg=PT24-25.

On India's beef exports, as quoted in "Funds from cow slaughter racket being pumped into terror: Maneka Gandhi" http://timesofindia.indiatimes.com/india/Funds-from-cow-slaughter-racket-being-pumped-into-terror-Maneka-Gandhi/articleshow/42477955.cms, The Times of India (15 September 2014)
2011-present

Letter to Abd al-Rahman bin Nu'aym, also quoted in History of the Prophets and Kings, Vol. 24, p. 101

Speech to the same crowd of 5,000, as recounted by a different source, quoted in [Gray, John S., 1986, The Story of Mrs. Picotte-Galpin, a Sioux Heroine: Eagle Woman Becomes a Trader and Counsels for Peace, 1868-1888, https://www.jstor.org/stable/4518988, Montana: The Magazine of Western History, 36, 3, 2–21, 0026-9891]