Musnad Ahmad 31:901

Ya'qub narrated to us, he said: My father narrated to us, from Salih, and Ibn Shihab narrated from 'Amir ibn Sa'd, that he informed him that Abu Sa'id al-Khudri said: "The Messenger of Allah (may Allah bless him and grant him peace) forbade *al-mulamasah*, and *al-mulamasah* is the touching of a garment without looking at it. And he forbade *al-munabadhah*, and *al-munabadhah* is a man throwing his garment to a man before he turns it over."