Yahya related to me from Malik from Ibn Shihab from a man of the family of Khalid ibn Asid that he said to Abdullah ibn Umar, "Abu Abd ar-Rahman, we find the fear prayer and the prayer when settled mentioned in the Qur'an, but we do not find any mention of the travelling prayer in it." Ibn Umar said, "Son of my brother! Allah the Mighty and Majestic sent us Muhamma ﷺ and we know nothing. We only do as we saw him doing."  

فَقَالَ يَا أَبَا عَبْدِ الرَّحْمَنِ إِنَّا نَجِدُ صَلاَةَ الْخَوْفِ وَصَلاَةَ الْحَضَرِ فِي الْقُرْآنِ وَلاَ نَجِدُ صَلاَةَ السَّفَرِ فَقَالَ ابْنُ عُمَرَ يَا ابْنَ أَخِي إِنَّ اللَّهَ ﷻ بَعَثَ إِلَيْنَا مُحَمَّدًا ﷺ وَلاَ نَعْلَمُ شَيْئًا فَإِنَّمَا نَفْعَلُ كَمَا رَأَيْنَاهُ يَفْعَلُ  

Yahya related to me from Malik from Salih ibn Kaysan from Urwa ibn az-Zubayr that A'isha, the wife of the Prophet ﷺ said, "The prayer was prescribed as two rakas, both when settled and when travelling. Then the travelling prayer was kept as it was, and an increase was made in the prayer when settled. "  

عَنْ عَائِشَةَ زَوْجِ النَّبِيِّ ﷺ أَنَّهَا قَالَتْ فُرِضَتِ الصَّلاَةُ رَكْعَتَيْنِ رَكْعَتَيْنِ فِي الْحَضَرِ وَالسَّفَرِ فَأُقِرَّتْ صَلاَةُ السَّفَرِ وَزِيدَ فِي صَلاَةِ الْحَضَرِ  

Yahya related to me from Malik from Yahya ibn Said that he said to Salim ibn Abdullah, "What is the latest you have seen your father delay maghrib while on a journey?" and Salim replied, "One time the sun set when we were at Dhat al-Jaysh and he prayed maghrib at al- Aqiq."  

أَنَّهُ قَالَ لِسَالِمِ بْنِ عَبْدِ اللَّهِ مَا أَشَدَّ مَا رَأَيْتَ أَبَاكَ أَخَّرَ الْمَغْرِبَ فِي السَّفَرِ فَقَالَ سَالِمٌ غَرَبَتِ الشَّمْسُ وَنَحْنُ بِذَاتِ الْجَيْشِ فَصَلَّى الْمَغْرِبَ بِالْعَقِيقِ