That the Prophet ﷺ used to take him and Al-Hasan, and used to say, "O Allah! I love them, so please love them," or said something similar.  

عَنِ النَّبِيِّ ﷺ أَنَّهُ كَانَ يَأْخُذُهُ وَالْحَسَنَ وَيَقُولُ اللَّهُمَّ إِنِّي أُحِبُّهُمَا فَأَحِبَّهُمَا أَوْ كَمَا قَالَ  

O Allah, behold, I love him. Thou too love him and love one who loves him.  

عَنِ النَّبِيِّ ﷺ أَنَّهُ قَالَ لِحَسَنٍ اللَّهُمَّ إِنِّي أُحِبُّهُ فَأَحِبَّهُ وَأَحْبِبْ مَنْ يُحِبُّهُ  

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.»  

[Machine] The Messenger of Allah ﷺ said: "O Allah, indeed I love them, so make them love one another."  

قَالَ رَسُولُ اللهِ ﷺ اللهُمَّ إِنِّي أُحِبُّهُمَا فَأَحِبَّهُمَا  

[Machine] He informed me that he saw the Prophet ﷺ hugging Hasan and Husayn and saying, "O Allah, I love them, so love them."  

أَخْبَرَهُ أَنَّهُ رَأَى النَّبِيَّ ﷺ يَضُمُّ إِلَيْهِ حَسَنًا وَحُسَيْنًا يَقُولُ اللهُمَّ إِنِّي أُحِبُّهُمَا فَأَحِبَّهُمَا  

[Machine] That the Prophet ﷺ was carrying Al-Hasan, so he said: "Indeed, I love him, so I love him."  

أَنَّ النَّبِيَّ ﷺ كَانَ حَامِلًا الْحَسَنَ فَقَالَ إِنِّي أُحِبُّهُ فَأَحِبَّهُ  

[Machine] "The Prophet ﷺ used to take Hassan and embrace him, then he would say, 'O Allah, indeed this is my son, so love him and love those who love him.'"  

أَنَّ النَّبِيَّ ﷺ كَانَ يَأْخُذُ حَسَنًا فَيَضُمُّهُ إِلَيْهِ فَيَقُولُ «اللهُمَّ إِنَّ هَذَا ابْنِي فَأَحِبَّهُ وَأَحِبَّ مَنْ يُحِبُّهُ»  

"The Messenger of Allah said: 'Hasan and Husain will be the leaders of the youth of Paradise, and their father is better than them." (Using translation from Ibn Mājah 118)   

قَالَ رَسُولُ اللهِ ﷺ «الْحَسَنُ وَالْحُسَيْنُ سَيِّدَا شَبَابِ أَهْلِ الْجَنَّةِ اللهُمَّ إِنِّي أُحِبُّهُمَا فَأَحِبَّهُمَا»  

[Machine] The Prophet ﷺ used to take me and Al-Hasan bin Ali and would say, "O Allah, love them, for I love them."  

كَانَ رَسُولُ اللهِ ﷺ يَأْخُذُنِي وَالْحَسَنَ بْنَ عَلِيٍّ فَيَقُولُ «اللهُمَّ أَحِبَّهُمَا فَإِنِّي أُحِبُّهُمَا»  

That the Prophet ﷺ used to take him (i.e. Usama) and Al-Hassan (in his lap) and say: "O Allah! Love them, as I love them." (Using translation from Bukhārī 3735)   

كَانَ رَسُولُ اللهِ ﷺ يَأْخُذُ بِيَدِي وَيَدِ الْحَسَنِ فَيَقُولُ «اللهُمَّ إِنِّي أُحِبُّهُمَا فَأَحِبَّهُمَا»  

"اللَّهُمَّ إِنِّي أُحِبُّهُمَا فَأحِبَّهُمَا ".  

"كَانَ النَّبِىُّ ﷺ يَأخُذُ بِيَدِى وَبِيَدِ الْحَسَنِ وَيَقُولُ: اللَّهُمَّ أَحِبَّهُمَا فَإِنِّى أُحِبُّهُمَا".