إِذَا الْتَقَى الْخِتَانَانِ وَتَوَارَتِ الْحَشَفَةُ وَجَبَ الْغُسْلُ، أَنْزَلَ أَوْ لَمْ يُنْزِلْ
Translation: When the relevant parts meet and the glans is concealed, ghusl is required, whether ejaculation occurs or not.
The operative cause here is intercourse meeting the defined legal threshold.
Opening interactive controls...
Causes Requiring Ghusl and the Sunnah Baths
إِذَا الْتَقَى الْخِتَانَانِ وَتَوَارَتِ الْحَشَفَةُ وَجَبَ الْغُسْلُ، أَنْزَلَ أَوْ لَمْ يُنْزِلْ
Translation: When the relevant parts meet and the glans is concealed, ghusl is required, whether ejaculation occurs or not.
The operative cause here is intercourse meeting the defined legal threshold.