What is the ruling on a prayer whose remembrances are recited once quickly, and whose bowing is less than one minute?

Tranquility (ṭuma’nīnah) is obligatory in all the physical pillars of prayer alone: the settling of the limbs in the posture of the pillar for a period of time. Some scholars estimate this period to be the duration of saying "Subhan Allah" (Glory be to Allah) once. Therefore, if the prayer mentioned includes the recitation of Al-Fatiha with tranquility in all its pillars, then it is sufficient. As for the prescribed adhkar (remembrances) during bowing, prostration, and sitting between the two prostrations, they are sunnah (recommended) and not obligatory according to the majority of scholars. Whoever omits them, whether intentionally or forgetfully, their prayer is valid. The Hanbalis, who consider them obligatory, deem it sufficient to perform them once. However, if the speed mentioned compromises tranquility, then the prayer is invalid and must be repeated.