[Anckzxik]

The concept of al-Wala' wal-Bara, which could be translated as 'Loyalty and Disavowal', has become a big issue amongst Salafis for some time now (in Germany at least). And I also think that it's a very relevant topic for Muslims in the West, so have any of our Ulema written on this? The usual 'Love and Hate for Allah's Sake' chapters/articles I've read so far seem to be written in another context and eventually don't deal with the essence of the afore-mentioned concept.

So, can anyone guide me towards something realiable to read about this?