Anguttara Nikaya
As the 57th discourse of the fifth book of the Pali Canon's Anguttara Nikaya (AN), this discourse's abbreviated designation is AN 5.57 or AN V.57. Alternately, it may be designated as A iii 71 to signify that in the Pali Text Society's Anguttara Nikaya's third volume, this discourse starts on page 71.