We used to practice coitus interrupt us during the lifetime of Messenger of Allah ﷺ .  

كُنَّا نَعْزِلُ عَلَى عَهْدِ النَّبِيِّ ﷺ  

We used to practice coitus interrupt us while the Qur'an was being revealed. Jabir added: We used to practice coitus interrupt us during the lifetime of Messenger of Allah ﷺ while the Qur'an was being Revealed.  

كُنَّا نَعْزِلُ عَلَى عَهْدِ النَّبِيِّ ﷺ وَالْقُرْآنُ يَنْزِلُ  

We got female captives in the war booty and we used to do coitus interruptus with them. So we asked Messenger of Allah ﷺ about it and he said, "Do you really do that?" repeating the question thrice, "There is no soul that is destined to exist but will come into existence, till the Day of Resurrection."  

أَصَبْنَا سَبْيًا فَكُنَّا نَعْزِلُ فَسَأَلْنَا رَسُولَ اللَّهِ ﷺ فَقَالَ أَوَإِنَّكُمْ لَتَفْعَلُونَ قَالَهَا ثَلاَثًا مَا مِنْ نَسَمَةٍ كَائِنَةٍ إِلَى يَوْمِ الْقِيَامَةِ إِلاَّ هِيَ كَائِنَةٌ