Mishkat al-Masabih 13 Marriage كتاب النكاح 12

وَعَنْ مَعْقِلِ بْنِ يَسَارٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «تَزَوَّجُوا الْوَدُودَ الْوَلُودَ فَإِنِّي مُكَاثِرٌ بِكُمُ الْأُمَم» . رَوَاهُ أَبُو دَاوُد وَالنَّسَائِيّ

Ma’qil b. Yasar reported God’s Messenger as saying, “Marry women who are loving and very prolific, for I shall outnumber the peoples by you.” Abu Dawud and Nasa’i transmitted it.