As far as I know contextual link building is, building backlinks from other sites that are related to your particular niche and the links are within the content of the site.
My question is, how we can gain this kinda links and from where ?
we usually don't make this type of links, but I believe these contextual links are the most powerful !!
Once I shared a list of authority back links, and with that list, we can build contextual back links too, if you know share some other places where we can do the same thing.