The disagreement is between the view that some of the Salaf from the Tabi'un (the generation after the Companions) would be overcome by fainting during prayer, and the view that this did not occur with the Companions?

Question : How do we reconcile the fact that some of the Salaf from the Tabi'un would be in danger of fainting during prayer with the fact that such a thing did not benefit the Companions, even though they were stronger in their spending?

Answer : This is because they were weaker than the Companions, weaker than the Companions (may Allah be pleased with them); they could not bear combining the physical reality with their preoccupation with dhikr (the remembrance of Allah).