Sahih Muslim
The Book of Fasting (Kitab Al-Sawm)
Book Number: 006 / Hadith Number: 2482
Humaid reported that Anas (Allah be pleased with him) was asked about fasting during Ramadan while travelling. He said: We travelled with the MesseDger of Allah (may peace be upon him) during the month of Ramadan, but neither the ob- server of the fast found fault with the breaker of the fast, nor the breaker of the fast found fault with the observer of the fast.