Al-Tirmidhi narrated that Abu Dharr رضي الله عنه reported: The Messenger of Allah ﷺ said:
"Whoever prays the Qiyaam - ie, Taraweeh - with the Imam until he finishes, it will be registered (for the person) as if she had spent the whole night in prayer." {Rated as saheeh by al-Albani in Saheeh al-Tirmidhi.}