Narrated Anas bin Malik:
That the Messenger of Allah (ﷺ) was asked: "Which of the people of your house are most beloved to you?" He said: "Al-Hasan and Al-Husain." And he used to say to Fatimah: "Call my two sons for me." And he would smell them and hug them. (ES)
English reference (ES): Vol. 1, Book 46, Hadith 3772 (ES)
Arabic reference (ES): Book 49, Hadith 4141 (ES)