The Reckoner, The Sufficient, The one who Suffices.
Allah سُبْحَٰنَهُۥ وَتَعَٰلَىٰ is Al-Haseeb (in Arabic: ٱلْحَسِيبُ). He is The One who takes account of all actions and reckons them on the day of judgment. There is nothing that goes unnoticed, however small. Allah سُبْحَٰنَهُۥ وَتَعَٰلَىٰ is the one who will take account of all and everything and will hold each person accountable. He will give whatever is sufficient and necessary in every situation.