How to Find a Buddhist Sutta by Its Reference Number

A sutta reference is an address within a collection. “MN 44” points to discourse 44 in the Majjhima Nikaya. “SN 56.11” uses two levels within a different collection. The number helps you reach a text, but it needs the collection abbreviation to do its job.

The main complication is that Buddhist editions do not always assign the same address to the same material. A citation can be accurate in one edition and lead somewhere unexpected in another. The method below covers Pali discourse references commonly encountered in English Buddhist books and websites. Chinese and Tibetan canonical references use other systems, so their numbers cannot simply be entered into this scheme.

Keep the reference intact before searching

Copy the complete citation, including letters, punctuation, and any number in brackets. Also keep the sentence that prompted the search. A note reading “35.191, two oxen” is harder to resolve than “SN 35.191, To Kotthita, Thanissaro Bhikkhu.” The extra details are often what rescue a search when numbering differs.

Start with the collection's index on the publisher's website, or search the full citation together with the translator's name. If there is a direct link in the original article, follow it and inspect the page title. A search preview is useful for locating a page; the actual page lets you confirm whether the passage is there.

For a printed book, look first in its abbreviations and bibliography. An author may explain a numbering convention once at the beginning and use it throughout. Preserve that information before replacing an unfamiliar reference with the first matching result. Our broader guide to reading Buddhist sutras covers how to approach the text after locating it.

Read the letters before the numbers

Access to Insight's abbreviation key explains its references. The following common forms are enough for many initial searches.

Common Pali discourse references

Capitalization matters especially for SN and Sn. The numbers after AN identify a numbered book and a discourse within it. They are not a page number. A colon may take the place of a period, as in SN 56:11. Follow the local publisher's key when its formatting differs.

Try parsing the reference before typing it. With AN 8.6, the task is to find the Anguttara collection, open the Book of Eights, and locate the sixth discourse in that edition. This small step makes an unexpected search result easier to recognize.

A Roman numeral may point to a printed page

A citation such as A i 193 means Anguttara Nikaya, volume one, page 193 of the Pali Text Society Pali edition. Access to Insight explains this volume-and-page convention in its reference key. It does not mean AN 1.193 or page 193 in an English paperback. Keep the original citation visible while checking a concordance: “A i 193 Kalama” is a useful search; “Buddhist page 193” leaves the edition unidentified. Once the discourse is found, retain both its modern number and the printed reference.

This is particularly useful when reading older scholarship. A book can remain usable even if it predates a digital numbering scheme. What needs translating is the location system. Replacing Roman numerals with ordinary digits without checking their role can send the search into an entirely different part of the canon.

Why the Kalama Sutta has two familiar numbers

Access to Insight documents a concrete example in its Anguttara numbering concordance. The Kalama Sutta appears as AN 3.66 in the Thai system listed there and AN 3.65 in the PTS system. The concordance also supplies the printed reference A i 193.

This explains why two citations can differ without referring to two different Kalama discourses. It also shows why a general rule such as “subtract one” will fail. The concordance records changes in several parts of the collection, including differences in how material is divided. The appropriate tool is the documented correspondence for that passage.

When a teacher supplies one number and a website supplies another, save both with their source labels. There is no need to decide that one person has made a mistake before checking the editions. Conversely, the fact that some numbers differ legitimately does not make every mistaken citation valid. The content must still match.

Confirm the speakers and a distinctive passage

A second example can be checked directly. Thanissaro Bhikkhu's translation lists To Kotthita as SN 35.191. Bhikkhu Sujato's translation on SuttaCentral uses SN 35.232. Both place Sariputta and Mahakotthita at Isipatana near Varanasi. Both ask what binds the sense faculty and its object, and use a black ox and a white ox joined by one yoke.

Those details provide a stronger match than the title alone. Translations may spell a name differently, translate a title differently, or choose different English words for a technical term. Check the speakers, setting, question, and distinctive example together. A single shared phrase is weaker evidence, especially when a formula occurs across many discourses.

If the passage still does not appear, look for an indication that the webpage contains only an excerpt. Also distinguish the discourse itself from a translator's introduction or footnote. An explanation next to the text may be helpful, but it should not be quoted as something the Buddha says within that discourse. The four reliances provide a further framework for reading meaning carefully once the source has been established.

Save enough information to return to the passage

A useful personal note needs four things: collection reference, title, translator, and a direct link or book edition. Add a section number or a few identifying words for the particular passage. This takes little space and avoids repeating the entire search next month.

For the example above, a workable note is: “SN 35.191, To Kotthita, Thanissaro Bhikkhu; compare SN 35.232, Bhikkhu Sujato; example of two oxen and a yoke.” Attach the relevant links. That note records the correspondence without pretending the wording of the two translations is identical.

Then return to the question that led you there. Was the passage about a practice instruction, a definition, or a particular conversation? Locating an exact number is a beginning. Wise attention to the question being asked helps the reading become more than collecting references. An accurately saved passage can be reread in context, discussed with someone else, and corrected if a later comparison reveals a mistake.