Musnad Ahmad 907:144

Abdullah narrated to us, al-Saghani narrated to us, Salamah ibn Hafs al-Sa’di narrated to us—Abdullah said: I have seen Salamah ibn Hafs, and he was nicknamed Abu Bakr, from the descendants of Sa’d ibn Malik, white of head and beard, and Abu Bakr al-Saghani narrated to me from him—Yahya ibn Yaman narrated to us, from Isra’il, from Simak, from Jabir ibn Samurah, who said: "The finger of the Prophet, may Allah bless him and grant him peace, was 'mutazahira' (appearing as if one was over the other/overlapping)."