Muwatta Imam Malik Book of Prayer in Congregation, Hadith 36

Yahya related to me from Malik that he had heard that A'isha, the wife of the Prophet ﷺ used to pray in a shift and head-covering.

حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ عَائِشَةَ، زَوْجَ النَّبِيِّ ﷺ كَانَتْ تُصَلِّي فِي الدِّرْعِ وَالْخِمَارِ .