Narrated Abu Burdah (RA) from his father's:

I heard Allah's Messenger (ﷺ) say, "That time is between the time when the Imam sits down and the end of the prayer." [Reported by Muslim. ad-Daraqutni held that the stronger view is that it is the saying of Abu Burdah].

وَعَنْ أَبِي بُرْدَةَ عَنْ أَبِيهِ سَمِعْتُ رَسُولَ اَللَّهِ ‏- صلى الله عليه وسلم ‏-يَقُولُ: { هِيَ مَا بَيْنَ أَنْ يَجْلِسَ اَلْإِمَامُ إِلَى أَنْ تُقْضَى اَلصَّلَاةُ } رَوَاهُ مُسْلِمٌ, وَرَجَّحَ اَلدَّارَقُطْنِيُّ أَنَّهُ مِنْ قَوْلِ أَبِي بُرْدَةَ .‏ [1]‏ .‏