﴿ قَالَ هِىَ رَٰوَدَتْنِى عَن نَّفْسِى ۚ وَشَهِدَ شَاهِدٌۭ مِّنْ أَهْلِهَآ إِن كَانَ قَمِيصُهُۥ قُدَّ مِن قُبُلٍۢ فَصَدَقَتْ وَهُوَ مِنَ ٱلْكَٰذِبِينَ ﴾

“[Joseph] exclaimed: "It was she who sought to make me yield myself unto her!" Now one of those present, a member of her own household, suggested this: If his tunic has been torn from the front, then she is telling the truth, and he is a liar;”

Please check ayah 12:29 for complete tafsir.