The Messenger of Allah ﷺ granted permission to the pregnant woman who fears for herself to break her fast, and likewise to the nursing mother who fears for her child.
حدثنا هشام بن عمار الدمشقي حدثنا الربيع بن بدر عن الجريري عن الحسن
رخص رسول الله ﷺ للحبلى التي تخاف على نفسها أن تفطر وللمرضع التي تخاف على ولدها
No references are available.
[Its chain of transmission is extremely daif]. See no. 269 for its defect, and it has other defects as well.