Jabir (May Allah be pleased with him) reported:
The Messenger of Allah ﷺ was asked: "Which Salat is the best?" He replied, " The best Salat is that in which Qiyam (the duration of standing) is longer."

[Muslim].

وعن جابر رضي الله عنه قال: سئل رسول الله ﷺ : أي الصلاة أفضل؟ قال: "طول القنوت" ((رواه مسلم)).