Be careful when measuring things and make sure your standards are accurate so you can get accurate results from your calculations and estimations.

This hadith talks about a measurement called the "Makkuk Khalid". It was two measurements according to the measurements of Harun, which was also known as the sa' of Hisham b. 'Abd al-Malik. This hadith is important because it shows us how people in that time measured things and how they kept track of their measurements and standards for them. It also teaches us that we should be careful when measuring things and make sure that our standards are accurate so that we can get accurate results from our calculations and estimations.