´It was narrated that Ibn 'Abbas said:` "The Messenger of Allah would not break fast on the days of Al-Bid whether he was a resident or traveling."
Explanation & Benefits
Hafiz Muhammad Ameen
Urdu marginal note:
By "Ayyam al-Beedh" are meant the 13th, 14th, and 15th dates, because on these nights the moon appears full and remains visible throughout the night.
Source: Sunan Nasa'i: Translation and Benefits by Shaykh Hafiz Muhammad Amin Hafizullah, Page: 2347