Musnad Ahmad 834:31

'Abd al-Razzaq narrated to us, Ma'mar narrated to us, from Ayyub, from Sa'id ibn Jubayr, who said: I was with 'Abd Allah ibn Mughaffal, and a man from his people threw a pebble [using his fingers] in his presence. He mentioned the like of the hadith of Isma'il ibn 'Ulayyah, from Ayyub, from Sa'id ibn Jubayr, that a relative of 'Abd Allah ibn Mughaffal threw a pebble, so he forbade him.