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»  

[Machine] The Prophet ﷺ used to take me and seat me on his thigh, and he would seat Hasan ibn Ali on his other thigh, then he would hug us and say, "O Allah, love them, for I love them."  

كَانَ نَبِيُّ اللهِ ﷺ يَأْخُذُنِي فَيُقْعِدُنِي عَلَى فَخِذِهِ وَيُقْعِدُ الْحَسَنَ بْنَ عَلِيٍّ عَلَى فَخِذِهِ الْأُخْرَى ثُمَّ يَضَعُنَا ثُمَّ يَقُولُ «اللهُمَّ أَحِبَّهُمَا فَإِنِّي أُحِبُّهُمَا»  

Messenger of Allah ﷺ sent troops appointed Usama bin Zaid as their commander. The people criticized his leadership. Messenger of Allah ﷺ got up and said, "If you (people) are criticizing his (i.e. Usama's) leadership you used to criticize the leadership of his father before. By Allah, he (i.e. Zaid) deserved the leadership indeed, and he used to be one of the most beloved persons to me, and now this (i.e. his son, Usama) is one of the most beloved persons to me after him." (Using translation from Bukhārī 4469)   

طَعَنَ النَّاسُ فِي إِمَارَةِ ابْنِ زَيْدٍ فَقَامَ رَسُولُ اللهِ ﷺ فَقَالَ «إِنْ تَطْعَنُوا فِي إِمَارَةِ ابْنِ زَيْدٍ فَقَدْ كُنْتُمْ تَطْعَنُونَ فِي إِمَارَةِ أَبِيهِ مِنْ قَبْلِهِ وَايْمُ اللهِ إِنْ كَانَ حَقِيقًا لِلْإِمَارَةِ وَإِنْ كَانَ لِمَنْ أَحَبِّ النَّاسِ كُلِّهِمْ إِلَيَّ وَإِنَّ هَذَا لَأُحِبُّ النَّاسِ إِلَيَّ بَعْدَهُ فَاسْتَوْصُوا بِهِ خَيْرًا فَإِنَّهُ مِنْ خِيَارِكُمْ»  

[Machine] The Messenger of Allah ﷺ ordered Usama to deliver the message that people were criticizing and finding fault in his leadership. He said, "You criticize Usama and find fault in his leadership, even though you did the same to his father before. Even if he was not fit for leadership, he is the most beloved person to me. And his son after him is the most beloved person to me. Treat him well, as he is among your best." Salim said, "I have never heard Abdullah bin Umar narrate this hadith without adding, 'May Allah protect Fatima.'"  

أَمَّرَ رَسُولُ اللهِ ﷺ أُسَامَةَ فَبَلَغَهُ أَنَّ النَّاسَ يَعِيبُونَ أُسَامَةَ وَيَطْعَنُونَ فِي إِمَارَتِهِ فَقَالَ «إِنَّكُمْ تَعِيبُونَ أُسَامَةَ وَتَطْعَنُونَ فِي إِمَارَتِهِ وَقَدْ فَعَلْتُمْ ذَلِكَ بِأَبِيهِ مِنْ قَبْلِ وَإِنْ كَانَ لَخَلِيقًا لِلْإِمَارَةِ وَإِنْ كَانَ لَأَحَبَّ النَّاسِ كُلِّهِمْ إِلَيَّ وَإِنَّ ابْنَهُ هَذَا مِنْ بَعْدِهِ لَأَحَبُّ النَّاسِ إِلَيَّ فَاسْتَوْصُوا بِهِ خَيْرًا فَإِنَّهُ مِنْ خِيَارِكُمْ» قَالَ سَالِمٌ فَمَا سَمِعْتُ عَبْدَ اللهِ بْنَ عُمَرَ يُحَدِّثُ هَذَا الْحَدِيثَ قَطُّ إِلَّا قَالَ مَا حَاشَا فَاطِمَةَ