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
bayhaqi:5518 – ʿAbdullāh b. Jaʿfar b. Darastawayh > Yaʿqūb b. Sufyān > Abū Ṣāliḥ And Ibn Bukayr > al-Layth b. Saʿd > Rabīʿah b. Abū ʿAbd al-Raḥman

Abdullah ibn Dinar said: The sun set when I was with Abdullah ibn Umar. We proceeded, and when we saw that the evening came, we said prayer. He went on travelling until the twilight disappeared and the stars became thick. He then slighted and combined the two prayers. Then he said: I saw the Messenger of Allah ﷺ; when he hastened his travelling, he would pray like this prayer of mine. He said: He would combine the two prayers after the passing of a part of night. AbuDawud said: This has been transmitted by Asim ibn Muhammad from his brother on the authority of Salim and this has also been narrated by Ibn AbuNajih from Isma'il ibn AbdurRahman ibn Dhuwayb saying that Ibn Umar would combine the two prayers after the disappearance of twilight. (Using translation from Abū Dāʾūd 1217)   

البيهقي:٥٥١٨ – فَأَخْبَرَنَاهُ أَبُو الْحُسَيْنِ مُحَمَّدُ بْنُ الْحُسَيْنِ بْنِ الْفَضْلِ الْقَطَّانُ بِبَغْدَادَ أنبأ عَبْدُ اللهِ بْنُ جَعْفَرِ بْنِ دَرَسْتَوَيْهِ ثنا يَعْقُوبُ بْنُ سُفْيَانَ ثنا أَبُو صَالِحٍ وَابْنُ بُكَيْرٍ قَالَا ثنا اللَّيْثُ بْنُ سَعْدٍ قَالَ قَالَ رَبِيعَةُ بْنُ أَبِي عَبْدِ الرَّحْمَنِ حَدَّثَنِي عَبْدُ اللهِ بْنُ دِينَارٍ وَكَانَ مِنْ صَالِحِي الْمُسْلِمِينَ صِدْقًا وَدِينًا قَالَ غَابَتِ الشَّمْسُ وَنَحْنُ مَعَ عَبْدِ اللهِ بْنِ عُمَرَ فَسِرْنَا فَلَمَّا رَأَيْنَاهُ قَدْ أَمْسَى قُلْنَا لَهُ الصَّلَاةَ فَسَكَتَ فَسَارَ حَتَّى غَابَ الشَّفَقُ وَتَصَوَّبَتِ النُّجُومُ فَنَزَلَ فَصَلَّى الصَّلَاتَيْنِ جَمِيعًا ثُمَّ قَالَ

رَأَيْتُ رَسُولَ اللهِ ﷺ إِذَا جَدَّ بِهِ السَّيْرُ صَلَّى صَلَاتِي هَذِهِ يَقُولُ جَمَعَ بَيْنَهُمَا بَعْدَ لَيْلٍ وَأَمَّا حَدِيثُ إِسْمَاعِيلَ بْنِ عَبْدِ الرَّحْمَنِ  

See similar narrations below:

Collected by Abū Dāwūd
abudawud:1217 – ʿAbd al-Malik b. Shuʿayb > Ibn Wahb > al-Layth > Rabīʿah / Katab Ilayh > ʿAbdullāh b. Dīnār > Ghābat al-Shams > ʿInd ʿAbdullāh b. ʿUmar Fasirnā Falammā Raʾaynāh Qad Amsá Qulnā al-Ṣalāh Fasār Ḥattá Ghāb al-Shafaq Wataṣawwabat al-Nujūm Thum Innah Nazal Faṣallá al-Ṣalātayn Jamīʿ Thum

Abdullah ibn Dinar said: The sun set when I was with Abdullah ibn Umar. We proceeded, and when we saw that the evening came, we said prayer. He went on travelling until the twilight disappeared and the stars became thick. He then slighted and combined the two prayers. Then he said: I saw the Messenger of Allah ﷺ; when he hastened his travelling, he would pray like this prayer of mine. He said: He would combine the two prayers after the passing of a part of night. AbuDawud said: This has been transmitted by Asim ibn Muhammad from his brother on the authority of Salim and this has also been narrated by Ibn AbuNajih from Isma'il ibn AbdurRahman ibn Dhuwayb saying that Ibn Umar would combine the two prayers after the disappearance of twilight.  

أبو داود:١٢١٧ – حَدَّثَنَا عَبْدُ الْمَلِكِ بْنُ شُعَيْبٍ حَدَّثَنَا ابْنُ وَهْبٍ عَنِ اللَّيْثِ قَالَ قَالَ رَبِيعَةُ يَعْنِي كَتَبَ إِلَيْهِ حَدَّثَنِي عَبْدُ اللَّهِ بْنُ دِينَارٍ قَالَ غَابَتِ الشَّمْسُ وَأَنَا عِنْدَ عَبْدِ اللَّهِ بْنِ عُمَرَ فَسِرْنَا فَلَمَّا رَأَيْنَاهُ قَدْ أَمْسَى قُلْنَا الصَّلاَةُ فَسَارَ حَتَّى غَابَ الشَّفَقُ وَتَصَوَّبَتِ النُّجُومُ ثُمَّ إِنَّهُ نَزَلَ فَصَلَّى الصَّلاَتَيْنِ جَمِيعًا ثُمَّ قَالَ

رَأَيْتُ رَسُولَ اللَّهِ ﷺ إِذَا جَدَّ بِهِ السَّيْرُ صَلَّى صَلاَتِي هَذِهِ يَقُولُ يَجْمَعُ بَيْنَهُمَا بَعْدَ لَيْلٍ  

قَالَ أَبُو دَاوُدَ رَوَاهُ عَاصِمُ بْنُ مُحَمَّدٍ عَنْ أَخِيهِ عَنْ سَالِمٍ وَرَوَاهُ ابْنُ أَبِي نَجِيحٍ عَنْ إِسْمَاعِيلَ بْنِ عَبْدِ الرَّحْمَنِ بْنِ ذُؤَيْبٍ أَنَّ الْجَمْعَ بَيْنَهُمَا مِنِ ابْنِ عُمَرَ كَانَ بَعْدَ غُيُوبِ الشَّفَقِ