Ibn Umar (Allah be pleased with them) said that Messenger of Allah ﷺ prohibited Shighar which means that a man gives his daughter in marriage on the condition that the other gives his daughter to him in marriage with- out any dower being paid by either.  

أَنَّ رَسُولَ اللَّهِ ﷺ نَهَى عَنِ الشِّغَارِ وَالشِّغَارُ أَنْ يُزَوِّجَ الرَّجُلُ ابْنَتَهُ عَلَى أَنْ يُزَوِّجَهُ ابْنَتَهُ وَلَيْسَ بَيْنَهُمَا صَدَاقٌ  

A hadith like this has been narrated on the authority of" Abdullah b. 'Umar (Allah be pleased with them) but with a slight variation of words.  

عَنِ النَّبِيِّ ﷺ بِمِثْلِهِ غَيْرَ أَنَّ فِي حَدِيثِ عُبَيْدِ اللَّهِ قَالَ قُلْتُ لِنَافِعٍ مَا الشِّغَارُ  

Ibn Umar (Allah be pleased with them) reported that Messenger of Allah ﷺ prohibited Shighar.  

أَنَّ رَسُولَ اللَّهِ ﷺ نَهَى عَنِ الشِّغَارِ  

There is no Shighar in islam.  

أَنَّ النَّبِيَّ ﷺ قَالَ لاَ شِغَارَ فِي الإِسْلاَمِ  

Shighar means that a person should say to the other person: Give me the hand of your daughter in marriage and I will (in return) marry my daughter to you; or merry me your sister, and I will marry my sister to you.  

نَهَى رَسُولُ اللَّهِ ﷺ عَنِ الشِّغَارِ زَادَ ابْنُ نُمَيْرٍ وَالشِّغَارُ أَنْ يَقُولَ الرَّجُلُ لِلرَّجُلِ زَوِّجْنِي ابْنَتَكَ وَأُزَوِّجُكَ ابْنَتِي أَوْ زَوِّجْنِي أُخْتَكَ وَأُزَوِّجُكَ أُخْتِي  

This hadith has been narrated on the authority of Ibn Vmar with the same chain of transmitters, but there is no mention of Ibn Numair.  

عَنْ عُبَيْدِ اللَّهِ وَهُوَ ابْنُ عُمَرَ بِهَذَا الإِسْنَادِ وَلَمْ يَذْكُرْ زِيَادَةَ ابْنِ نُمَيْرٍ  

Jabir b. Abdullah (Allah be pleased with him) reported that Messenger of Allah ﷺ prohibited Shighar.  

أَنَّهُ سَمِعَ جَابِرَ بْنَ عَبْدِ اللَّهِ يَقُولُ نَهَى رَسُولُ اللَّهِ ﷺ عَنِ الشِّغَارِ