عَنْ أُسَامَةَ بْنِ زَيْدٍ قَالَ سَأَلْتُ طَاوُسًا عَنِ السُّبْحَةِ فِي السَّفَرِ؟ قَالَ: وَكَانَ الْحَسَنُ بْنُ مُسْلِمِ بْنِ يَنَّاقٍ جَالِسًا، فَقَالَ الْحَسَنُ بْنُ مُسْلِمٍ وَطَاوُسٌ يَسْمَعُ: حَدَّثَنَا طَاوُسٌ عَنِ ابْنِ عَبَّاسٍ رَضِيَ اللَّهُ عَنْهُ قَالَ فَرَضَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ صَلَاةَ الْحَضَرِ وَالسَّفَرِ، فَكَمَا تُصَلِّي فِي الْحَضَرِ قَبْلَهَا وَبَعْدَهَا فَصَلِّ فِي السَّفَرِ قَبْلَهَا وَبَعْدَهَا، قَالَ وَكِيعٌ مَرَّةً: وَصَلِّهَا فِي السَّفَرِ
Usama bin Zaid says: I asked Tawus about offering voluntary prayers during travel, while Hasan bin Muslim was also sitting there. Hasan bin Muslim said, and Tawus was listening, that Tawus narrated to us from Sayyiduna Abdullah bin Abbas (may Allah be pleased with him), who said that the Messenger of Allah (peace and blessings be upon him) made the prayers obligatory in both residence and travel. Therefore, just as you offer (voluntary) prayers before and after the obligatory prayer while residing, in the same way, you should also offer the preceding and following (Sunnah) prayers during travel.