The Messenger of Allah ﷺ said, "If one of you finishes quickly or fails to ejaculate, he is not required to perform the full bath."
حدثنا عبد الرزاق أخبرنا الثوري عن الأعمش عن ذكوان
قال رسول الله ﷺ إذا عجل أحدكم أو أقحط فلا يغتسلن
No references are available.
Its isnad is sahih, it was mentioned earlier in full at 11129.