The Source of Traditions on Imam al-Riḍā (Vol 2) · Hadith 145 (#Ḥadīth #145)

145 - وَبِهذَا الإِسنادِ عَنْ الحَسَنِ، عَنْ عَلِيٍعَلَيْهِمَاالسَّلاَمُ أَنَّهُ سُمّى حَسَناً يَوْمَ السّابِعِ وَاشتُقَّ مِن اسمِ الحَسَنِ حُسَيْناً، وَذَكَرَ أَنَّهُ لَمْ يَكُنْ بَيْنَهُما إِلّا الحَمْلُ.

31-145 According to the same documentation, on the authority of Al-Hassan ibn Ali , on the authority of Ali , “They named my son Al-Hassan on the seventh day (after his birth). Al-Husayn’s name was derived from Al-Hassan. There was not any more than one period of pregnancy difference between their birth.”

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).