Of course not.  From SAHIH Bukhari Volume 3, Book 34, Number 351: http://www.usc.edu/org/cmje/religious-texts/hadith/bukhari/034-sbt.php#003.034.351
Narrated Jabir bin Abdullah:

A man decided that a slave of his would be manumitted after his death and later on he was in need of money, so the Prophet took the slave and said, "Who will buy this slave from me?" Nu'aim bin 'Abdullah bought him for such and such price and the Prophet gave him the slave. 

You ready to sit down now or are you going to continue to squawk and look even more foolish?