Hawzah News Agency – The merciful prophet of Islam (pbuh) says:

حسنٌ مِنّي وأنا مِنهُ، أحَبَّ اللَّهُ مَنْ أحبَّهُ، الحسنُ والحسينُ سِبْطانِ مِن الأسْباطِ.

'Hasan is from me and I am from him. Allah loves the one who loves him. Hasan and Husayn are the two most special grandchildren.'

Source: Bihar al-Anwar, v. 43, p. 306, no. 66