What message did the Prophet Muhammad (saw) share through Mu'awyia b. Salih according to the hadith transmitted by Zuhair b. Harb, 'Abd al-Rahman b. Mahdi, Harun b. Sa'id al-'Aili and Ibn Wahb?
 This hadith has been transmitted with the same chain of transmitters from Mu'awyia b. Salih by Zuhair b. Harb, 'Abd al-Rahman b. Mahdi, Harun b. Sa'id al-'Aili and Ibn Wahb.