Heya Rationalizer, gotcha on the main sitemap.xml.
I do see the other sitemap files can be retrieved such as:http://quranx.com/sitemaps/Tafsir/Wahidi-1.xmlhttp://quranx.com/sitemaps/Hadith/bukhari-1.xmlhttp://quranx.com/sitemaps/Hadith/Tirmidhi-1.xml
Yeah, that does not make sense as to why zero of the Hadith sitemaps are not getting indexed at all. I'll ask my friend what could be happening on that.
I see the others are having some success, but not 100%, could be not all of the links in those sitemaps are up to date perhaps. I built a tool for one of my places that I worked for that would scrape the sitemap files and verifiy the urls, that could be the issue regarding those.
.. but really, really strange why zero of the hadith ones are not indexed. I'll ask my friend, see if he has any idea why that could be happening... The hadith section is properly linked just like the others - strange.