'Aayeshah Radiyallahu 'Anha says:
"Rasulullah Sallallahu 'Alayhi Wasallam did not leave behind Dinars, nor Dirhams, nor goats nor camels. (The narrator of this hadith) said, I am in doubt if she had mentioned male or female slaves"
English reference: Book 54, Hadith 388
Arabic reference: Book 55, Hadith 405