Limits are very much clear in Quran and Sunnah and Judge of Islamic Courts and Scholars can also see and check it
In support of SMR allow me to post a lengthy reply.
In Quran, there are numerous ayahs that deal with the situation and give believers direction what to do in such circumstance (that is, to preserve patient and ignore person guilty of blasphemy).
Quran 4:140: Already has He sent you Word in the Book, that when you hear the signs (Revelations, Quran) of Allah held in defiance (rejected, disbelieved) and ridicule (mocked), ye are not to sit with them unless they turn to a different theme: if ye did, ye would be like them. For Allah will collect the hypocrites and those who defy faith - all in Hell:-
[In above ayah, it is clear that when we find people doing blasphemy, that is, rejecting, mocking, or ridiculing signs of Allah, we should leave them alone until/unless they change, that means they stop doing blasphemy and/or become believer. If we join them, that could happen if we keep sitting with them listening to their blasphemy, or not leave them alone, rather argue and fight them, then we would be similar to them ... would become those who are either hypocrites or unbelievers. ...]
Quran 73:10: And have patience with what they say, and leave them with noble (dignity).
Quran 3:186: You shall certainly be tried and tested in your possessions and in your personal selves; and you shall certainly Hear much that will grieve you, from those who received the Book before you and from those who worship many gods. But if ye persevere patiently, and guard against evil,-then that will be a determining factor in all affairs.
[Note: Note: Blasphemy is something that when believers hear, it brings grief to believers, and Allah tells that such grief would be test/trial for believers from Allah, as believer would bear this grief, preserves his patient on the grief, and ignores the person giving grief by moving away from that person ... and that is the condition of success in such test/trial. Those who would stay in the gathering would be unbeliever and
those who would lose patient and would retaliate, would be munafiq and obvious failure, as they would not be believing on Islam for Allah but their attachment to Islam would be personal, that is, they would consider it as what they believe or what they inherited as belief (in other words, they would consider themselves theka-daar of Islam, considering Islam as theirs personal property), and then they would become intolerant, so would end up in hell.
It is just like with everything. Money, properties, life, career, children, wife, or whatever we have in life. Even though we may love them but if we believe that all what we have is of Allah, we would be patient when we lose them, but if we love them and think that it is mine (we personally own them), then we would not lose them with patient, but we would get agitated losing them and would retaliate ... and that situation would show that the person is munafiq as that person might say that all what he/she has is of Allah, but he literally does not believe that].
As for ayah 5:33, that some people in ignorance quote, that ayah is nothing to do with blasphemy, it is to do with fighting those waging war against Allah and his messenger (or against Islam) and spreading mischief on land using force (something extremists in the dressing of Islam are doing these days). Here is ayah, read the ayah carefully and think.
Surah 5:33: The punishment of those who wage war against Allah and His Messenger, and strive with might and main for mischief through the land is: execution, or crucifixion, or the cutting off of hands and feet from opposite sides, or exile from the land: that is their disgrace in this world, and a heavy punishment is theirs in the Hereafter;
[Note: execution, or crucifixion, or the cutting off of hands and feet from opposite sides, or exile from the land ... are all in a sense what happens at war]
