Musannaf Ibn Abi Shayba 3:5053

Waki’ narrated to us, from Isra’il, from Jabir, who said: I asked ‘Amir about touching the Mushaf without wudu’, and he said: "There is no harm in it." Muhammad ibn ‘Ali, ‘Abd al-Rahman ibn al-Aswad, al-Qasim, Salim, and Tawus disliked it.