ANSWER:

It is true that the Prophet salla Allahu alaihi wa sallam used to pray sunnah of fajr in a quick fashion but this didn’t go against it being perfect in tranquility. 

Shaykh what is tranquility in salat measured as? due to the fact that you said the prophet ﷺ prayed the sunnah of fajr very quickly, if this is true nobody dares to say the prophets prayer was invalid so how to distinguish calmness as a pillar?

Prayer |