Nadir Nadir The nadir (, ; from / ALA-LC: "naẓīr", meaning "counterpart") is the direction pointing directly "below" a particular location; that is, it is one of two vertical directions at a specified location, orthogonal to a horizontal flat surface there. Since the concept of "being below" is itself somewhat vague, scientists define the nadir in more rigorous terms. Specifically, in astronomy, geophysics and related sciences (e.g., meteorology), the nadir at a given point is the local vertical direction pointing in the direction of the force of gravity at that location. The direction opposite the nadir is the zenith. Nadir is
Banu Nadir As a result, Muhammad went to the Nadir, asking them to make a contribution towards the blood money of two men killed. Initially most of the Nadir, except Huyayy ibn Akhtab, were inclined to accept Muhammad's request. However, Ibn Ubayy communicated to ibn Akhtab of his intent, along with allied nomads, to attack Muhammad. The Nadir, then postponed the contribution until later that day. Muhammad left the locality immediately accusing the Banu Nadir of plotting to assassinate him, saying to have learned this either through revelation or Muhammad ibn Maslama. According to other sources, the Banu Nadir invited Muhammad to