Maliks Muwatta Book 18, Hadith Number 25.Maliks Muwatta Book 18. Fasting Section : Fasting while Travelling. Yahya related to me from Malik from Nafi that Abdullah ibn Umar used not to fast while travelling. Related Previous Post Maliks Muwatta Book 18, Hadith Number 26. Next Post Maliks Muwatta Book 18, Hadith Number 24.