This template is used in articles to identify sentences or short passages with information or analysis that has one or more inline citations but which are to insufficiently reliable sources. It produces a superscripted notation like the following:

Most people believe in ghosts.[1][better source needed]
References
1. Random tabloid

You can also include a |reason= note, which displays as a tooltip upon mouse hover, to leave a better record for future editors. For example, the following usage might be appropriate to the arguable claim that "Most people believe in ghosts...":

{{Better source|reason=Citation is the Ghostbusters' company website; there must be more objective sources for this.|date=ନଭେମ୍ବର ୨୦୨୪}}

General template for copy-pasting:

{{Better source|reason=|date=ନଭେମ୍ବର ୨୦୨୪}}

Adding this template to an article places the article into Category:All articles lacking reliable references or one of its dated subcategories, all part of a collection of categories identifying articles with reliable-sourcing issues. To find all such articles, see Category:Wikipedia articles with sourcing issues.

Contentious material about living persons that is unsourced or poorly sourced should be removed immediately. Do not tag it: remove it. For more information, see the section on contentious material in the Biography of Living Persons policy.

Material which is doubtful and harmful may be removed immediately, rather than tagged. See Wikipedia:Citing sources § Unsourced material.

If no citation is given, use the {{Citation needed}} tag instead. If the source given is self-published, use {{Self-published inline}}. If you think the author has a conflict of interest or is otherwise too close to the subject, use {{Third-party inline}}. If the source has been surpassed by a newer, reliable publications that no longer support the claim in the article, use {{Obsolete source}}.

If you have the time and ability to find a better reference, please do so. Then correct the citation yourself, or correct the article text. After all, the ultimate goal is not to merely identify problems, but to fix them.