Ruling on following in prayer one who stands to complete what he missed of the prayer

Question:
If the follower catches up with the imam for one or two units of prayer, and then the imam concludes the prayer, and then he stands to complete what he missed, is it permissible for another man to follow him?

Answer:
The best course is that no one follows him; each person prays for himself. This is the best. If a person is overtaken by part of the prayer and the imam concludes the prayer, he stands and makes up what he missed on his own. If someone follows him and makes him his imam, there is no blame on him, and the correct view is that the prayer is valid. If he follows him and makes him his imam, the prayer is valid, but the best is to make up the prayer for himself. When the Prophet (peace and blessings be upon him) was delayed in some of the expeditions from the dawn prayer—because he was relieving himself—'Abd al-Rahman ibn 'Awf led the people in the dawn prayer. The Prophet (peace and blessings be upon him) came with al-Mughirah ibn Shu'bah, and 'Abd al-Rahman had prayed one unit. They prayed with him the remaining unit, and then the Prophet (peace and blessings be upon him) and al-Mughirah stood and made up what they had missed. Each one made up what was required of him. Al-Mughirah did not follow the example of the Prophet (peace and blessings be upon him); rather, each one made up what he had missed. This is what is known in the hadith. The Prophet (peace and blessings be upon him) said: Each one completes for himself.