Musnad Ahmad 31:616

Hashim ibn al-Qasim and Bahz narrated to us, they said: Sulayman narrated to us, from Humayd, from Abu Salih—Bahz said: al-Samman—from Abu Sa’id al-Khudri, who said: I heard the Messenger of Allah, peace and blessings of Allah be upon him, saying: "If one of you prays—Bahz said: towards something that screens him from the people—and someone wants to pass in front of him, let him push him in his chest. If he refuses, let him fight him, for he is only a devil."