Musnad Ahmad 31:130

Hassan narrated to us, Ibn Lahi'ah narrated to us, Abu al-Zubayr narrated to us, Jabir informed me that he heard Abu Sa'id al-Khudri testifying, "That the Messenger of Allah, peace and blessings of Allah be upon him, forbade him from that, and forbade him from facing the Qibla for urination." And this follows the hadith of Ibn Lahi'ah, from Abu al-Zubayr, who said: I asked Jabir about a man drinking while standing, and he said: "We used to dislike that." Then he mentioned the hadith of Abu Sa'id.