Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
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muslim:756a – ʿAbd b. Ḥumayd > Abū ʿĀṣim > Ibn Jurayj > Abū al-Zubayr > Jābir

The most excellent prayer is that in which the duration of standing is longer.  

مسلم:٧٥٦a – حَدَّثَنَا عَبْدُ بْنُ حُمَيْدٍ أَخْبَرَنَا أَبُو عَاصِمٍ أَخْبَرَنَا ابْنُ جُرَيْجٍ أَخْبَرَنِي أَبُو الزُّبَيْرِ عَنْ جَابِرٍ قَالَ

قَالَ رَسُولُ اللَّهِ ﷺ أَفْضَلُ الصَّلاَةِ طُولُ الْقُنُوتِ  

See similar narrations below:

Collected by Ibn Mājah, Aḥmad, Suyūṭī
ibnmajah:1421 – Bakr b. Khalaf Abū Bishr > Abū ʿĀṣim > Ibn Jurayj > Abū al-Zubayr > Jābir b. ʿAbdullāh

“The Prophet ﷺ was asked: ‘Which prayer is best?’ He said: ‘That with the longer Qunut.’”  

ابن ماجة:١٤٢١ – حَدَّثَنَا بَكْرُ بْنُ خَلَفٍ أَبُو بِشْرٍ حَدَّثَنَا أَبُو عَاصِمٍ عَنِ ابْنِ جُرَيْجٍ عَنْ أَبِي الزُّبَيْرِ عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ قَالَ

سُئِلَ النَّبِيُّ ﷺ أَىُّ الصَّلاَةِ أَفْضَلُ قَالَ طُولُ الْقُنُوتِ  

ahmad:14368 – Abū Muʿāwiyah And Yaʿlá Wawakīʿ > al-Aʿmash > Abū Sufyān > Jābir

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.) (Using translation from Muslim 756b)  

أحمد:١٤٣٦٨ – حَدَّثَنَا أَبُو مُعَاوِيَةَ وَيَعْلَى وَوَكِيعٌ قَالُوا حَدَّثَنَا الْأَعْمَشُ عَنْ أَبِي سُفْيَانَ عَنْ جَابِرٍ قَالَ

سُئِلَ رَسُولُ اللهِ ﷺ أَيُّ الصَّلَاةِ أَفْضَلُ؟ قَالَ طُولُ الْقُنُوتِ  

suyuti:3813a –

The most excellent prayer is that in which the duration of standing is longer. (Using translation from Muslim 756a)   

السيوطي:٣٨١٣a –

"أفضل الصلاةِ طولُ القيام".  

الطحاوي، [ض] ضياء المقدسي في مختاره عن جابر بن نصر عن عبد الله بن حبشى