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.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
abudawud:833 – Abū Tawbah al-Rabīʿ b. Nāfiʿ > Abū Isḥāq / al-Fazārī > Ḥumayd > al-Ḥasan > Jābir b. ʿAbdullāh

we used to offer supererogatory prayers and recite supplications while we were standing, and would glorify Allah while bowing and prostrating.  

أبو داود:٨٣٣ – حَدَّثَنَا أَبُو تَوْبَةَ الرَّبِيعُ بْنُ نَافِعٍ أَخْبَرَنَا أَبُو إِسْحَاقَ يَعْنِي الْفَزَارِيَّ عَنْ حُمَيْدٍ عَنِ الْحَسَنِ عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ قَالَ

كُنَّا نُصَلِّي التَّطَوُّعَ نَدْعُو قِيَامًا وَقُعُودًا وَنُسَبِّحُ رُكُوعًا وَسُجُودًا  

See similar narrations below:

Collected by Suyūṭī