Muwatta Malik, Book 26, Hadith 1075 (In-Book) ⓘ
Yahya related to me from Malik that he heard that there had been an aqiqa for Hasan and Husayn, the sons of Ali ibn Abi Talib.
وَحَدَّثَنِي عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّهُ عُقَّ عَنْ حَسَنٍ، وَحُسَيْنٍ، ابْنَىْ عَلِيِّ بْنِ أَبِي طَالِبٍ .
also referenced under: Book 26, Hadith 64 (USC-MSA)