It is narrated from al-Qasim bin Muhammad that Aishah (may Allah be pleased with her) used to let a woman go out while she was in her 'iddah following her husband's death. Al-Qasim bin Muhammad said: The people refused that and did nothing but oppose her, so we would not take her view and abandon the view of the people. And Allah knows best.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب العدد / 15510