Originally Posted by Abdur_Rahman
Every field of study in the Islamic Sciences has a chain. Just like a chain exists for every Sahih Hadith, likewise chains must exist also for Fiqh, Aqeedah, Tasawwuf etc. This ensures that the Tasawwuf, Fiqh Aqeedah is "Sahih" just like ahadith. So chains are not just restricted to ahadith. They are employed in every field of Islamic Knowledge.
Wallahu Ta'ala 'Alam