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:1209 – Qutaybah > ʿAbdullāh b. Nāfiʿ > Abū Mawdūd > Sulaymān b. Abū Yaḥyá > Ibn ʿUmar

The Messenger of Allah ﷺ never combined the sunset and night prayers while on a journey except once. Abu Dawud said: This has been narrated by Ayyub from Nafi' from Ibn 'Umar as a statement of Ibn 'Umar. Ibn 'Umar was never seen combining these two prayers except on the night he was informed about the death of Safiyyah. The tradition narrated by Makhul from Nafi' indicates that he (Nafi') saw Ibn 'Umar doing so once or twice.  

أبو داود:١٢٠٩ – حَدَّثَنَا قُتَيْبَةُ حَدَّثَنَا عَبْدُ اللَّهِ بْنُ نَافِعٍ عَنْ أَبِي مَوْدُودٍ عَنْ سُلَيْمَانَ بْنِ أَبِي يَحْيَى عَنِ ابْنِ عُمَرَ قَالَ

مَا جَمَعَ رَسُولُ اللَّهِ ﷺ بَيْنَ الْمَغْرِبِ وَالْعِشَاءِ قَطُّ فِي السَّفَرِ إِلاَّ مَرَّةً  

قَالَ أَبُو دَاوُدَ وَهَذَا يُرْوَى عَنْ أَيُّوبَ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ مَوْقُوفًا عَلَى ابْنِ عُمَرَ أَنَّهُ لَمْ يُرَ ابْنُ عُمَرَ جَمَعَ بَيْنَهُمَا قَطُّ إِلاَّ تِلْكَ اللَّيْلَةَ يَعْنِي لَيْلَةَ اسْتُصْرِخَ عَلَى صَفِيَّةَ وَرُوِيَ مِنْ حَدِيثِ مَكْحُولٍ عَنْ نَافِعٍ أَنَّهُ رَأَى ابْنَ عُمَرَ فَعَلَ ذَلِكَ مَرَّةً أَوْ مَرَّتَيْنِ