فَإِن تَابُوا وَأَقَامُوا الصَّلَاةَ وَآتَوُا الزَّكَاةَ فَإِخْوَانُكُمْ فِي الدِّينِ ۗ وَنُفَصِّلُ الْآيَاتِ لِقَوْمٍ يَعْلَمُونَ (11)
(9:11) yet if they repent even now, and establish Salat and pay Zakat dues, then they shall be your brethren in faith. Thus We make plain Our Messages to those who try to understand. *14
*14) Here, too, it has explicitly been stated that those who repent will not become your brethren in faith without the observance of Salat and Zakat.
"Yet if ........they shall be your brethren in faith": This means that "if they fulfil those conditions, then not only shall their lives and properties become unlawful for you but also they shall enjoy equal rights with you in the Islamic Community. There shall be no distinction between them and the other Muslims in regard to social, cultural, legal and political rights, and nothing will stand in their way to the progress for which they are otherwise qualified.
14a. "........you should fight with them.....":perhaps the fear of war may force them to desist from breaking oaths and reviling Islam.