Yahya related to me from Malik from more than one reliable sourcethat Sad ibn Abi Waqqas and Said ibn Zayd ibn Amr ibn Nufayl died atal-Aqiq and were carried to Madina and buried there. (DE)
USC-MSA web (English) reference: Book 16, Hadith 31 (DE)
Arabic reference (DE): Book 16, Hadith 553 (DE)