Sahih Muslim 1440
Sahih Muslim · Book 16: The Book of Marriage · The ruling on coitus interrupts ('Azl)
Jabir (Allah be pleased with him) reported:
وَحَدَّثَنِي أَبُو غَسَّانَ الْمِسْمَعِيُّ ، حَدَّثَنَا مُعَاذٌ، - يَعْنِي ابْنَ هِشَامٍ - حَدَّثَنِي أَبِي ، عَنْ أَبِي الزُّبَيْرِ ، عَنْ جَابِرٍ ، قَالَ كُنَّا نَعْزِلُ عَلَى عَهْدِ رَسُولِ اللَّهِ صلى الله عليه وسلم فَبَلَغَ ذَلِكَ نَبِيَّ اللَّهِ صلى الله عليه وسلم فَلَمْ يَنْهَنَا .
We used to practise 'azl during the lifetime of Allah's Messenger (ﷺ). This (the news of this practise) reached Allah's Apostle (ﷺ), and he did not forbid us.