AL-MUHSEE-The All-Enumerating One The Counter

The One who knows the details of each and every thing. The One who possesses all quantitative knowledge.

The One who comprehends everything, small or great, inner or outer. The One who registers and records every thought and deed.
 

From the root h–s-y which has the following classical Arabic connotations:

to number, count, reckon, compute
to collect in an aggregate by numbering
to register or record something
to take an account of something
to comprehend or know altogether
to possess full comprehension

The name Mushī  is not specifically used as a Beautiful Name in the Qur’ān.