Ibn Umar said: “The Messenger of Allah forbade Shighar. Shighar is when a man says to another man: 'Marry your daughter or sister to me, on condition that I will marry my daughter or sister to you,' and they do not give any dower (i.e. neither of them give other the dower).”  

نَهَى رَسُولُ اللَّهِ ﷺ عَنِ الشِّغَارِ وَالشِّغَارُ أَنْ يَقُولَ الرَّجُلُ لِلرَّجُلِ زَوِّجْنِي ابْنَتَكَ أَوْ أُخْتَكَ عَلَى أَنْ أُزَوِّجَكَ ابْنَتِي أَوْ أُخْتِي وَلَيْسَ بَيْنَهُمَا صَدَاقٌ  

Abu Hurairah said: “The Messenger of Allah forbade Shighar.”  

نَهَى رَسُولُ اللَّهِ ﷺ عَنِ الشِّغَارِ  

the Messenger of Allah said: “There is no Shighar in Islam.”  

قَالَ رَسُولُ اللَّهِ ﷺ لاَ شِغَارَ فِي الإِسْلاَمِ