I'm not a Breitbart reader but, after reading your comment, clicked through your link to see what was what.
To claim that it has "basically no source" is not true. The Breitbart piece links to the German-language article on which it is based. I'll link it here again for you:
The translator whose statements are featured in both the Brietbart piece and the original German article is allegedly a Christian Eritrean woman who has requested anonymity because she fears reprisals from the Islamic asylum claimants with whom her work requires that she interact.
Other people quoted in the German article are indeed identified by name.
Disclaimer: I am not vouching for the veracity of their statements, the integrity of the original German-language publication, or of Brietbart.