Where should the woman whose husband died observe her waiting period?

Sunan Ibn Majah · Book 10 · Hadith 2031

حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا أَبُو خَالِدٍ الأَحْمَرُ، سُلَيْمَانُ بْنُ حَيَّانَ عَنْ سَعْدِ بْنِ إِسْحَاقَ بْنِ كَعْبِ بْنِ عُجْرَةَ، عَنْ زَيْنَبَ بِنْتِ كَعْبِ بْنِ عُجْرَةَ، وَكَانَتْ، تَحْتَ أَبِي سَعِيدٍ الْخُدْرِيِّ أَنَّ أُخْتَهُ الْفُرَيْعَةَ بِنْتَ مَالِكٍ، قَالَتْ خَرَجَ زَوْجِي فِي طَلَبِ أَعْلاَجٍ لَهُ فَأَدْرَكَهُمْ ب…

It was narrated from Zainab bint Ka'b bin 'Ujrah, who was married to Abu Sa'eed Al-Khudri,: that his sister Furai'ah bint Malik said: "My husband went out to pursue some slaves of his. He caught up with them at the edge…