Abu Sa'id al-Khudri (RA) (was asked if he had heard it himself), to which he said: Yes. (I heard) Allah's Apostle (ﷺ) as saying: There is no harm if you do not practise it, for it (the birth of the child) is something ordained (by Allah).
Hadith ReferenceSahih Muslim / The Book of Marriage / Hadith: 1438