The Messenger of Allah ﷺ was asked about the prayer which was most excellent. He said: That in which the standing is longer. (This hadith is narrated by another chain of transmitters too.)
سُئِلَ رَسُولُ اللَّهِ ﷺ أَىُّ الصَّلاَةِ أَفْضَلُ قَالَ طُولُ الْقُنُوتِ قَالَ أَبُو بَكْرٍ حَدَّثَنَا أَبُو مُعَاوِيَةَ عَنِ الأَعْمَشِ