It is narrated from Sayyiduna Anas bin Malik (may Allah be pleased with him) that among the children of Sayyiduna Ali (may Allah be pleased with him) there was none who resembled the Messenger of Allah (peace and blessings be upon him) more than Sayyiduna Hasan (may Allah be pleased with him).

It is narrated from Abdullah bin Ubayd bin Umayr that Sayyiduna Hasan bin Ali (may Allah be pleased with them both) performed Hajj 25 times on foot, while his fine riding camels (thoroughbred she-camels) were led along with him (without a rider).

It is narrated from Qatadah that Sayyidah Fatimah (may Allah be pleased with her) gave birth to Sayyiduna Hasan (may Allah be pleased with him) two years after the Battle of Uhud, and between the Battle of Uhud and the arrival of the Prophet (peace and blessings be upon him) in Madinah there was a span of two years, six months and fifteen days. Thus, according to the Hijri calendar, Hasan (may Allah be pleased with him) was born at 4 years, 6 months and 15 days.

It is narrated from Ibn Waqid that Abu Muhammad Sayyiduna Hasan bin Ali bin Abi Talib (may Allah be pleased with them both) died in Rabi' al-Awwal of the year 49 AH, and Sa'id bin al-As led his funeral prayer.

It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that he said: I have never ceased to love this man (Hasan, may Allah be pleased with him) ever since I saw the Messenger of Allah (peace and blessings be upon him) treat him as I saw. I saw Hasan in the lap of the Prophet (peace and blessings be upon him), putting his fingers into the blessed beard of the Prophet (peace and blessings be upon him), while the Prophet (peace and blessings be upon him) was putting his tongue into his mouth. Then he (peace and blessings be upon him) said: 'Allahumma inni uhibbuhu fa-ahibbahu' (O Allah, I love him, so love him too). This hadith has a sahih (authentic) chain, but the two Shaykhs (Bukhari and Muslim) did not record it.