Sayyiduna Usamah bin Zayd (may Allah be pleased with him) informed Sayyiduna Sa'd (may Allah be pleased with him) that a man came to the Messenger of Allah (peace and blessings be upon him) and said: "I practise withdrawal ('azl) with my wife." He (peace and blessings be upon him) asked: "Why?" He said: "Out of concern for the child." The Messenger of Allah (peace and blessings be upon him) said: "If that is the reason, then do not do so; this did not harm the people of Persia and the people of Rome."
This hadith is not narrated from Sayyiduna Usamah (may Allah be pleased with him) except with this chain, and Abu al-Nadr is alone in narrating it.
Hadith Referenceالمعجم الأوسط / باب الألف / 182
Hadith Takhrij«أخرجه مسلم فى «صحيحه» برقم: 1443، والبيهقي فى «السنن الكبرى» برقم: 15786، وأحمد فى «مسنده» برقم: 22184، والبزار فى «مسنده» برقم: 2588، والطحاوي فى «شرح معاني الآثار» برقم: 4428، والطحاوي فى «شرح مشكل الآثار» برقم: 3671، والطبراني فى «الكبير» برقم: 382»