It is narrated from Sayyiduna Jabir (may Allah be pleased with him) that a man came to the Prophet (peace and blessings be upon him) and said: "I have a slave-girl, and I practise 'azl (withdrawal) with her." He (peace and blessings be upon him) said: "Indeed, this practice cannot prevent a matter that Allah Almighty has willed." Then only a short time had passed when the man came again and said to the Prophet (peace and blessings be upon him): "That slave-girl has become pregnant." At this the Prophet (peace and blessings be upon him) said: "I am the servant of Allah and His Messenger."
Hadith Referenceمسند أبي يعلى الموصلي / مسند جابر / 2076
Hadith Takhrij«قال سعيد بن محمد السناري: صحيح» «أخرجه مسلم [1439]، والنسائى في "الكبرى" [9096]، والبيهقى في "سننه" [14084]، والحميدى [1258]، و، مسند ابویعلیٰ ترقیم الاثری: 2072»