15. Ahmad Ibn
Yahya (RA) writes in his Al mi'yar:
"A section of Scholars says that the fasting is obligatory for those who get the information of the Hilal witnessed elsewhere. This is the view expressed by Imam Shafiy and Ahmad. I understand that this is the view of Imam Malik and Imam Abu Haneefa also." (Al mi'yar Vol.1, page 416).