It is narrated from Sayyiduna Anas bin Malik (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) used to command marriage and strongly forbid celibacy (tabattul), and he would say: "Marry women who are loving and bear many children, for I will take pride in your great numbers over the other prophets on the Day of Resurrection."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Hafs, the nephew of Sayyiduna Anas (may Allah be pleased with him), except Khalaf bin Khalifah."
Hadith Referenceالمعجم الأوسط / باب الميم / 5099
Hadith Takhrij«أخرجه ابن حبان فى «صحيحه» برقم: 4028، والضياء المقدسي فى «الأحاديث المختارة» برقم: 1889، 1890، 1888، وسعيد بن منصور فى «سننه» برقم: 490، والبيهقي فى «السنن الكبرى» برقم: 13606، وأحمد فى «مسنده» برقم: 12808، 13776، والبزار فى «مسنده» برقم: 6456»