Musnad Ahmad 1153:1691

Waki’ narrated to us, he said: Isra’il and Sharik narrated to us, from al-Miqdam ibn Shurayh, from his father, from ‘Aishah, that the Prophet, peace and blessings of Allah be upon him, said: "Gentleness is never in anything but that it adorns it, and it is never removed from anything but that it disfigures it."