Sayyiduna Abu Uthman al-Ansari (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings be upon him) knocked at my door, and I had been with my wife, so I disliked going out to him (peace and blessings be upon him) without having taken a ritual bath (ghusl), and so I was delayed. Then I caught up with him (peace and blessings be upon him) and informed him (peace and blessings be upon him), and he (peace and blessings be upon him) said to me: "Did you ejaculate?" I said: No. He (peace and blessings be upon him) said: "Then nothing was required of you except ablution (wudu)."
Hadith Referenceالمعجم الكبير للطبراني / مسند من يعرف بالكنى / 19132