It was narrated from Abu Qilabah that Abu Umayyah Ad-Damri told him that:
he came to the Messenger of Allah from a journey and he was fasting. The Messenger of Allah said to him, Won't you come and have meal for the breakfast? He said: I am fasting. The Messenger of Allah said: Come and I will tell you about fasting. Allah, the mighty and sublime, has waived fasting and half of the prayer from the traveler.