Mu'awiya said, "I heard some words from the Prophet, may Allah
bless him and grant him peace, by which Allah helped me." Jubayr ibn Nufayr
said, "I heard him say that he heard the Messenger of Allah, may Allah
bless him and grant him peace, say, "If you openly show your suspicions
of people, you will corrupt them.' Therefore I do not show my suspicions
of people openly so that I will not corrupt them."