Ibn ʿUmar went on a journey and said, "I accompanied the Prophet ﷺ and he did not offer optional prayers during the journey, and Allah says: 'Verily! In Messenger of Allah ﷺ you have a good example to follow.' " (33.21)
صَحِبْتُ النَّبِيَّ ﷺ فَلَمْ أَرَهُ يُسَبِّحُ فِي السَّفَرِ وَقَالَ اللَّهُ جَلَّ ذِكْرُهُ {لَقَدْ كَانَ لَكُمْ فِي رَسُولِ اللَّهِ أُسْوَةٌ حَسَنَةٌ}
I fell ill and lbn 'Umar came to inquire after my health, and I asked him about the glorification of Allah (i. e. prayer) while travelling. Thereupon he said: I accompanied the Messenger of Allah ﷺ on a journey but I did not see him glorifying Him, and were I to glorify (Him). I would have completed the prayer. Allah, the Exalted, has said:" Verily there is a model pattern for you in the Messenger of Allah."
صَحِبْتُ رَسُولَ اللَّهِ ﷺ فِي السَّفَرِ فَمَا رَأَيْتُهُ يُسَبِّحُ وَلَوْ كُنْتُ مُسَبِّحًا لأَتْمَمْتُ وَقَدْ قَالَ اللَّهُ تَعَالَى { لَقَدْ كَانَ لَكُمْ فِي رَسُولِ اللَّهِ إِسْوَةٌ حَسَنَةٌ}