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:1324 – Makhlad b. Khālid > Ibrāhīm / Ibn Khālid > Rabāḥ b. Zayd > Maʿmar > Ayyūb > Ibn Sīrīn > Abū Hurayrah

He should then prolong it afterwards as much as he likes. Abu Dawud said: This tradition has been transmitted by Hammad b. Salamah, Zuhair b. Mu'awiyah and a group of narrators from Hisham. They transmitted it as a statement of Abu Hurairah himself (mauquf). This tradition has also been transmitted by Ibn 'Awn from Muhammad (b. Sirin). This version has the wordings: These two rak'ahs were short.  

أبو داود:١٣٢٤ – حَدَّثَنَا مَخْلَدُ بْنُ خَالِدٍ حَدَّثَنَا إِبْرَاهِيمُ يَعْنِي ابْنَ خَالِدٍ عَنْ رَبَاحِ بْنِ زَيْدٍ عَنْ مَعْمَرٍ عَنْ أَيُّوبَ عَنِ ابْنِ سِيرِينَ عَنْ أَبِي هُرَيْرَةَ قَالَ

إِذَا بِمَعْنَاهُ زَادَ ثُمَّ لْيُطَوِّلْ بَعْدُ مَا شَاءَ  

قَالَ أَبُو دَاوُدَ رَوَى هَذَا الْحَدِيثَ حَمَّادُ بْنُ سَلَمَةَ وَزُهَيْرُ بْنُ مُعَاوِيَةَ وَجَمَاعَةٌ عَنْ هِشَامٍ عَنْ مُحَمَّدٍ أَوْقَفُوهُ عَلَى أَبِي هُرَيْرَةَ وَكَذَلِكَ رَوَاهُ أَيُّوبُ وَابْنُ عَوْنٍ أَوْقَفُوهُ عَلَى أَبِي هُرَيْرَةَ وَرَوَاهُ ابْنُ عَوْنٍ عَنْ مُحَمَّدٍ قَالَ فِيهِمَا تَجَوَّزْ