Hadithcore
Sahih Muslim, 827 h
sahih

This hadith has been narrated on the authority of Qatada with the same chain of transmitters and he said:

" More than three (days) except in the company of a Mahram."

وَحَدَّثَنَاهُ ابْنُ الْمُثَنَّى، حَدَّثَنَا ابْنُ أَبِي عَدِيٍّ، عَنْ سَعِيدٍ، عَنْ قَتَادَةَ، بِهَذَا الإِسْنَادِ وَقَالَ ‏

‏ أَكْثَرَ مِنْ ثَلاَثٍ إِلاَّ مَعَ ذِي مَحْرَمٍ ‏

‏ ‏.‏

References2 variants
In-Book Reference
Book 15, Hadith 469
USC-MSA web (English) reference
Book 7, Hadith 3103 (deprecated numbering scheme)