COMMENTARY on 17:35
A. Yusuf Ali:

Translation:
Give full measure when you measure, and weigh with a balance that is straight: that is the most fitting and the most advantageous in the final determination. 2221
Commentary:

2221  Givingjust measure and weight is not only right in itself but is ultimately to the best spiritual and material advantage of the person who gives it.

 

Muhammad Asad:

Translation:
And give full measure whenever you measure, and weigh with a balance that is true: 44 this will be [for your own] good, and best in the end.
Commentary:
44  Lit., "straight" (mustaqim)-a term which in the Qur'an has invariably a spiritual or moral connotation. Hence, as in the similar phrase in 6:152, the above injunction applies not merely to commercial transactions but to all dealings between man and man.