In Berbera the established Qadiriyya tariqa would soon be challenged by a new tariqa. The most prominent Sheikh of the Salihiyya order was Mahmud Abdalla Hassan who arrived in Berbera in 1895 and constructed his own masjid and began propagating. He was strongly against khat and chewing tobacco, both of which the Qadiriyya had permitted.[15] Amongst other disputes he would come to debate the leading Qadiriyya sheikhs of Berbera including Aw Gaas and Xaaji Ibrahim Xirsi.