As salam alaykum,
I have searched for the opinions of the major scholars of the different madhahib on the validity of performing sa'i in the expanded Safa and Marwa with little luck.
This is a little suprising as there is a real brouhaha in Saudi between the Ulama and the Saudi authorities. The majority of the scholars have said that any lateral expansion beyond that of the previous one, which took it to the limit, is invalid.
This previous expansion was carried out with the consultation of the Ulama of the time including the then Mufti Sh. Muhammad ibn Ibrahim and a number of non Hanbali Makkan scholars like Sh. Alawi al-Maliki in which they precisely defined the extent of Safa and Marwa.
Does anybody know what the scholars in other countries have said?