reliable and solid (ثِقَةٌ ثَبْت)
الحديث
التعريف :
A description of a narrator implying that he is unblemished and very accurate, as well as his exercise of due care and diligence when learning or narrating hadith. It is a term of the third degree of acceptability. The hadiths narrated by people of this degree are written down to serve as evidence.