In the Name of Allah, the Most Merciful and Compassionate
If you are reasonably sure that you reached the minimum bowing whilst the imam has not raised from the bowing – you have caught that unit of prayer with the Imam.The basis is that the Imam is in the bowing position. If you are not sure that he left that position, assume that he hadn’t.Hope this helps.
Allah knows best
[Shaykh] Yusuf Weltch
Checked and Approved by Shaykh Faraz Rabbani
Shaykh Yusuf Weltch is a graduate from Tarim; a student of Habib Umar and other luminaries; and authorized teachers of the Qur’an and the Islamic sciences