Hadith on Women: Men and women should not mix in private with guardians

Jabir ibn Abdullah reported: The Messenger of Allah, peace and blessings be upon him, said, “Whoever has faith in Allah and the Last Day, let him not be alone with a woman without a guardian with her. Verily, the third of them is Satan.”

Source: Musnad Aḥmad 14241

Grade: Sahih (authentic) according to Al-Albani

عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ قَالَ  قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ مَنْ كَانَ يُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الْآخِرِ فَلَا يَخْلُوَنَّ بِامْرَأَةٍ لَيْسَ مَعَهَا ذُو مَحْرَمٍ مِنْهَا فَإِنَّ ثَالِثَهُمَا الشَّيْطَانُ

14241 مسند أحمد باقي مسند المكثرين

180 المحدث الألباني خلاصة حكم المحدث صحيح في غاية المرام