Moosaa Richardson explains what leads some people into a common mistake, that when they miss the rukoo' (bowing) position of congregational prayer, they refrain from joining the prayer until the imaam begins the next rak'ah, assuming that since they missed the rak'ah, there is no point in prostrating. This misunderstanding is examined closely and identified for what it is: the very rationale of Iblees himself, as he was ordered to prostrate with a direct order, yet he rationalized and thought of reasons why he should not.

This issue has been summarized and published here some years ago: http://www.bakkah.net/en/dont-just-stand-there.htm

From class #35 of our Umdat al-Ahkaam series, as recorded at al-Masjid al-Awwal in Pittsburgh, Pennsylvania (USA) on 1437.11.29.