How can I include my own words (of an extra information) within the quotation? Can I do it in the following way, with the words in bracket being my own?

To quote the words of the Buddha:

> 
> “Here, Rahula, some monks [the Buddha has been pointing to himself, according to the commentary] live in forest. …”
> 
> 
> 

Even if I use the aforementioned method, the problem is that the readers won't know whether the words in bracket are added later. So how to do?