Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) narrates: The Prophet (peace and blessings be upon him) said: "No man should go in to a (non-mahram, lone) woman, except that if her mahram is with her, the ruling is different."
Al-Tabarani recorded it in al-Mu'jam al-Awsat. Its chain contains Ibn Lahi'ah, whose hadith is hasan (good) though there is weakness in him, and the rest of its narrators are thiqat (trustworthy).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب النكاح / 7716
Hadith Gradingمحدثین:إسنادہ حسن
Hadith Takhrij«أخرجه المعجم الكبير للطبراني برقم: 12203، وأخرجه المعجم الأوسط للطبراني برقم: 8373»