I asked the Prophet ﷺ about eating with a menstruating woman, and he said, "Eat with her."
حدثنا عباس العنبري ومحمد بن عبد الأعلى قالا حدثنا عبد الرحمن بن مهدي حدثنا معاوية بن صالح عن العلاء بن الحارث عن حرام بن معاوية
سألت النبي ﷺ عن مواكلة الحائض فقال واكلها
[Sahih]. Ibn Majah also recorded it in the Book of Purification, Chapter on Eating with a Menstruating Woman, no. 651, from the hadith of Ibn Mahdi through the same route, and Abu Dawud, no. 212, through another route from Ala bin Harith through the same route, and Ibn Khuzayma graded it sahih, no. 1202. The hadith has corroborating narrations in Muslim, no. 300, and elsewhere.On this topic there are also narrations from Ayesha [Muslim, no. 301, and Bukhari, no. 297] and Anas [Muslim, no. 302].