From Sahih Muslim (Hadith 3303):
A hadith like this has been narrated on the authority of Mansur, but he did not mention:" On that very day He created the heavens and the earth," and he (the narrator) substituted the word" fighting" (qital) for" killing" (qatl), and further said:" No one is to pick up the dropped thing except one who makes a public announcement of it
Reference: Muslim 3303