It is narrated from Hazrat Aisha (may Allah be pleased with her) that I and the Prophet (peace be upon him) used to perform ghusl of janabah from the same vessel of water. We become impure (junub), but the water does not become impure.
Hadith Referenceمسند احمد / مسند النساء / 25235
Hadith Gradingحکم دارالسلام:حديث صحيح، وهذا إسناد ضعيف لضعف جابر