It is narrated from Hazrat Jabir (may Allah be pleased with him) that I heard Hazrat Abu Saeed Khudri (may Allah be pleased with him) testifying about the Prophet (peace and blessings of Allah be upon him) that the Prophet (peace and blessings of Allah be upon him) forbade this, and he also strictly forbade facing the Qiblah while relieving oneself. Abu Zubair (may Allah have mercy on him) says that I asked Hazrat Jabir (may Allah be pleased with him) about drinking water while standing, so he replied that we did not consider it good, then he mentioned the aforementioned hadith of Hazrat Abu Saeed (may Allah be pleased with him).
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 11117
Hadith Gradingحکم دارالسلام:حديث صحيح، وهذا إسناد ضعيف لضعف ابن لهيعة، وانظر:1188