اتسق

From وَسْق (wasq, “a measure of capacity as much as a camel can bear”), compare وَاسِقَ (wāsiqa, “to seek to measure oneself with, to be on par with”).

اِتَّسَقَ • (ittasaqa) VIII (non-past يَتَّسِقُ (yattasiqu), verbal noun اِتِّسَاق (ittisāq))

1. to harmonize, to be in line, to be consistent [with مَعَ (maʕa) ‘with something’]
2. (intransitive) to become full, to become loaded
   • 609–632 CE, Qur'an, 84:16-18:

     فَلَا أُقْسِمُ بِالشَّفَقِ وَاللَّيْلِ وَمَا وَسَقَ وَالْقَمَرِ إِذَا ٱتَّسَقَ

     falā ʔuqsimu bi-š-šafaqi wa-l-layli wa-mā wasaqa wa-l-qamari ʔiḏā ttasaqa

     I swear by the twilight, and by the night and what it encloses, and by the moon when it becomes full.