Tafseer Ibn Kathir of HUUD [71]

وَامْرَأَتُهُ قَآئِمَةٌ فَضَحِكَتْ فَبَشَّرْنَاهَا بِإِسْحَاقَ وَمِن وَرَاء إِسْحَاقَ يَعْقُوبَ

And his Wife was standing, and she smiled. Then We gave her good tidings of Isaac and after Isaac, Jacob.