"And that which is in the breasts is obtained"—meaning: distinguished/made distinct, as in His saying: "The Day when secrets will be put on trial."
﴿وَحصل مَا فِي الصُّدُور﴾ أَيْ: مُيِّزَ كَقَوْلِهِ: ﴿يَوْمَ تُبْلَى السرائر﴾
