<a href="https://suttacentral.net/en/mn2">MN 2</a> lists examples of uwwise attention: 

> *What are the things unfit for attention that he attends to? They are things such that when he attends to them, the unarisen taint of
> sensual desire arises in him and the arisen taint of sensual desire
> increases, the unarisen taint of being arises in him and the arisen
> taint of being increases, the unarisen taint of ignorance arises in
> him and the arisen taint of ignorance increases. These are the things
> unfit for attention that he attends to.*





<a href="https://suttacentral.net/en/mn19">MN 19</a> provides a clear example about how wise reflection/attention is used to develop the path.