"I feel able to fast while traveling; is there any sin on me?" He said: "It is a concession from Allah, the mighty and sublime, so whoever accepts it has done well, and whoever wants to fast, there is no sin on him."  

أَنَّهُ قَالَ لِرَسُولِ اللَّهِ ﷺ أَجِدُ فِيَّ قُوَّةً عَلَى الصِّيَامِ فِي السَّفَرِ فَهَلْ عَلَىَّ جُنَاحٌ قَالَ هِيَ رُخْصَةٌ مِنَ اللَّهِ ﷻ فَمَنْ أَخَذَ بِهَا فَحَسَنٌ وَمَنْ أَحَبَّ أَنْ يَصُومَ فَلاَ جُنَاحَ عَلَيْهِ