Hadithcore
Sahih al-Bukhari, 7165
sahih

Narrated Sahl bin Sa`d:

I witnessed a husband and a wife who were involved in a case of Lian. Then (the judgment of) divorce was passed. I was fifteen years of age, at that time.

حَدَّثَنَا عَلِيُّ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا سُفْيَانُ، قَالَ الزُّهْرِيُّ عَنْ سَهْلِ بْنِ سَعْدٍ، قَالَ شَهِدْتُ الْمُتَلاَعِنَيْنِ وَأَنَا ابْنُ خَمْسَ، عَشْرَةَ فُرِّقَ بَيْنَهُمَا‏.‏

References2 variants
In-Book Reference
Book 93, Hadith 29
USC-MSA web (English) reference
Vol. 9, Book 89, Hadith 278 (deprecated numbering scheme)