Does intentionally urinating during ghusl from janabah invalidate the ghusl?

The emission of urine nullifies ablution (Wudu') by consensus, but it does not invalidate ritual purification (Ghusl) according to any scholar. This applies whether its emission was intentional or unintentional. The emission of urine or flatulence are among the nullifiers of ablution, not among the acts that necessitate Ghusl. Therefore, Wudu' is obligatory after the emission of urine, and Ghusl alone is not sufficient.