السلام عليكم ورحمة الله وبركاته ‏أحسن الله إليك At what age does someone become able to stand in the ranks for prayer while connecting the line. ‏جزاكم الله خيرا

Ustadh AbdulAziz al-Haqqan

The one who understands what is being said and replies even if they were below seven and the scholars mentioned those that their prayers are correct.