The Prophet ﷺ made duʿāʾ to have love for his two grandsons: al-Ḥasan and al-Ḥusayn
that the Prophet ﷺ saw al-Ḥasan and al-Ḥusayn, so he said: "O Allah, I love them, so love them."
أَنَّ النَّبِيَّ ﷺ أَبْصَرَ حَسَنًا وَحُسَيْنًا فَقَالَ: «اللَّهُمَّ إِنِّي أُحِبُّهُمَا فَأَحِبَّهُمَا.»