Indeed, I do not shake hands with women. My statement to a hundred women is like my statement to one woman

عَنْ أُمَيْمَةَ بِنْتِ رُقَيْقَةَ رضي الله عنها أَنَّهَا قَالَتْ: أَتَيْتُ النَّبِيَّ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ فِي نِسْوَةٍ مِنَ الْأَنْصَارِ نُبَايِعُهُ، فَقُلْنَا: يَا رَسُولَ اللَّهِ، نُبَايِعُكَ عَلَى أَلَّا نُشْرِكَ بِاللَّهِ شَيْئًا، وَلَا نَسْرِقَ، وَلَا نَزْنِيَ، وَلَا نَأْتِيَ بِبُهْتَانٍ نَفْتَرِيهِ بَيْنَ أَيْدِينَا وَأَرْجُلِنَا، وَلَا نَعْصِيَكَ فِي مَعْرُوفٍ، قَالَ: «فِيمَا اسْتَطَعْتُنَّ، وَأَطَقْتُنَّ» قَالَتْ: قُلْنَا اللَّهُ وَرَسُولُهُ أَرْحَمُ بِنَا، هَلُمَّ نُبَايِعْكَ يَا رَسُولَ اللَّهِ، فَقَالَ رَسُولُ اللَّهِ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ: «إِنِّي لَا أُصَافِحُ النِّسَاءَ، إِنَّمَا قَوْلِي لِمِائَةِ امْرَأَةٍ كَقَوْلِي لِامْرَأَةٍ وَاحِدَةٍ، أَوْ مِثْلُ قَوْلِي لِامْرَأَةٍ وَاحِدَةٍ».

’Umaymah bint Ruqayqah (may Allah be pleased with her) said: I came to the Prophet (may Allah's peace and blessings be upon him) along with a group of women from the Ansār to pledge allegiance to him. We said: O Messenger of Allah, we pledge allegiance to you that we will not associate anything with Allah, we will not steal, we will not commit adultery, we will not bring forth any falsehood that we fabricate between our hands and feet, and we will not disobey you in what is right. He said: "As much as you are able and can bear." She said: We said: Allah and His Messenger are more merciful to us. Come, let us pledge allegiance to you, O Messenger of Allah. But the Messenger of Allah (may Allah's peace and blessings be upon him) said: "Indeed, I do not shake hands with women. My statement to a hundred women is like my statement to one woman, or similar to my statement to one woman."

Source · Narrated by At-Tirmidhi, An-Nasā’i, Ibn Mājah

From the Hadith Encyclopedia (hadeethenc.com).