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.
tabarani:8715Isḥāq b. Ibrāhīm > ʿAbd al-Razzāq > al-Thawrī > Abū Isḥāq > al-Aswad > ʿAbdullāh

[Machine] "If prostration is the conclusion of the chapter, then if you wish, you may perform a complete unit of prayer and if you wish, you may prostrate."  

الطبراني:٨٧١٥حَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ عَنْ عَبْدِ الرَّزَّاقِ عَنِ الثَّوْرِيِّ عَنْ أَبِي إِسْحَاقَ عَنِ الْأَسْوَدِ عَنْ عَبْدِ اللهِ قَالَ

«إِذَا كَانَتِ السَّجْدَةُ خَاتِمَةَ السُّورَةِ فَإِنْ شِئْتَ رَكَعْتَ وَإِنْ شِئْتَ سَجَدْتَ»  


See similar narrations below:

Collected by Bayhaqī
bayhaqi:3763Abū ʿAbdullāh al-Ḥāfiẓ And ʾAbū Saʿīd b. Abū ʿAmr > Abū al-ʿAbbās > Usayd b. ʿĀṣim > al-Ḥusayn b. Ḥafṣ > Sufyān > Abū Isḥāq > al-Aswad > ʿAbdullāh b. Masʿūd

[Machine] He said, "If the prostration (sujood) is at the end of the surah, then he may choose to perform a bowing (raka'a) or prostration (sujood)."  

البيهقي:٣٧٦٣أَخْبَرَنَا أَبُو عَبْدِ اللهِ الْحَافِظُ وَأَبُو سَعِيدِ بْنُ أَبِي عَمْرٍو قَالَا ثنا أَبُو الْعَبَّاسِ ثنا أُسَيْدُ بْنُ عَاصِمٍ ثنا الْحُسَيْنُ بْنُ حَفْصٍ عَنْ سُفْيَانَ عَنْ أَبِي إِسْحَاقَ عَنِ الْأَسْوَدِ عَنْ عَبْدِ اللهِ بْنِ مَسْعُودٍ

أَنَّهُ قَالَ إِذَا كَانَتِ السَّجْدَةُ فِي آخِرِ السُّورَةِ فَإِنْ شَاءَ رَكَعَ وَإِنْ شَاءَ سَجَدَ