What is the ruling on the prayer of a worshipper who enters the mosque late for the congregation and follows one of the followers?

The questioner : Another question, O Shaykh: What is the ruling on the prayer of a worshipper who enters the mosque late for the congregation and follows one of the followers? And is there any evidence for this action?

The Shaykh : There is no evidence for that, and we do not consider it prescribed. If he enters... he prays alone, as the Salaf used to do.
Yes, give charity to the orphan girl, do not leave her...