When a worshipper who arrives late
and misses some units of Salah becomes the Imam, he should make up for the units that he missed. Other latecomers who join him should also make up for the units that they missed behind him until he ends Salah with Taslim. Then, they must rise to make up for the remaining units that they missed after the Imam pronounces Taslim.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.