The saying 'basa'ir' is in the accusative case as a حال (state). And 'basa'irah' is the light of the heart by which one perceives, just as 'basar' is the light of the eye by which one sees. He means by saying that We have given the Torah as lights for the hearts, because they were blind, unable to perceive or distinguish truth from falsehood. And as guidance, because they were groping in misguidance, and as mercy, because if they acted by it, they would attain mercy, so that they might remember, intending that they remember. The intention is likened to hope, so it is borrowed for it. It is also possible that it refers to the hope of Musa (Moses), blessings and peace be upon him. [Mawlid said: 'Its meaning is the intention of their remembering, because intention resembles hope, so it is borrowed for it. Or it refers to the hope of Musa, blessings and peace be upon him.'] For their remembering, as His saying, 'so that he might remember.'