SHAFAQNA – It is narrated from Imam Sadeq (AS) who said: Consider the religion of God for Allah (SWT), not for the people. Do not quarrel with people about your religion because arguing causes the illness of the hearts. Allah (SWT) said to the Prophet of Islam (PBUH): You cannot guide whoever you like, rather God guides whoever God wants; as mentioned in Ayah 56 of Surah Al-Qasas. Allah (SWT) also said: Do you want to force people to become believers? As mentioned in Ayah 99 of Surah Al-Yunus. Leave people, because you have been educated by the Prophet of Allah (SWT). Beware that whenever God wishes and sees it necessary for that person to enter the religion, that person enters quickly .
 Osul Kafi, Vol. 3, Page 302.