Saqeefa (the dark blue circled area) is one of the few tiny patches of garden 200 meters north-west of Masjid Nabawi. Banu Sa'edah, an eminent tribe of the Ansar resided here at the time of Rasulullah SallAllahu alaihi wasallam.
The Prophet SallAllahu alaihi wasallam used to visit Saqeefa, offering Salat there, sitting in the shade with his Companions. Sahl ibn Sa'd RadhiAllahu anhu drew water for him from a nearby well called Bir Budha'ah. This well existed just north of Saqeefa until the second Saudi extension of Masjid Nabawi.
The death of the Prophet SallAllahu alaihi wasallam led to the question as to who was to be the leader of the Muslims after the Prophet SallAllahu alaihi wasallam. While the noble body of the Prophet of Islam SallAllahu alaihi wasallam was being prepared for burial the Ansar of Madinah assembled at their meeting place Saqeefa Bani Sa'edah to discuss the question of succession. From Al-Miskeenah
A peek through the Gates