قَالَ مَا مَكَّنِّى فِيهِ رَبِّى خَيْرٌ فَأَعِينُونِى بِقُوَّةٍ أَجْعَلْ بَيْنَكُمْ وَبَيْنَهُمْ رَدْمًا
Commentary:
Cyrus said to the inhabitants of the place that he had the plan of the wall and other necessary material ready with him but they must provide human labour. The word قوة means physical strength i.e. human labour.
Cyrus told the inhabitants of the place to provide him with human labour, Quwwah meaning physical strength, i.e. human labour.