Muhammad bin Munkadir said that he heard Umaimah bint Ruqaiqah say:“I came to the Prophet (ﷺ) with some other women, to offer our pledge to him. He said to us: ‘(I accept your pledge) with regard to what you are able to do. But I do not shake hands with women.’”
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ، أَنَّهُ سَمِعَ مُحَمَّدَ بْنَ الْمُنْكَدِرِ، قَالَ سَمِعْتُ أُمَيْمَةَ بِنْتَ رُقَيْقَةَ، تَقُولُ جِئْتُ النَّبِيَّ صلى الله عليه وسلم فِي نِسْوَةٍ نُبَايِعُهُ فَقَالَ لَنَا " فِيمَا اسْتَطَعْتُنَّ وَأَطَقْتُنَّ إِنِّي لاَ أُصَافِحُ النِّسَاءَ " .
IbnMaja
The Chapters on Jihad • Hadith 2874