שופטים טז:כא פירוש: רש״י

They brought him down to Aza. The location where his ruin began³V.l.⁴Sotah, 9:b.

He became the miller. With grinding stones—arduous labor. The Rabbis interpret this after their fashion.⁵According to their interpretation, the Pelishtites brought their wives to the prison to be impregnated by Shimshon, (Sotah, 10:a)