Hadith 2307
´It was narrated from 'Aishah that Hamzah bin 'Amr said:` O Messenger of Allah, I am a man who fasts, so should I fast while traveling? He said: "If you wish then fast, and if you wish then do not fast."
Hadith 2411
´It was narrated that Abu Dharr said:` "The Messenger of Allah said: 'Whoever fasts for three days of each month, he has fasted for a whole lifetime.' Then he said: Allah has spoken the truth in His book: Whoever brings a good deed shall have ten times the like thereof to his credit.