No, you didn’t utter kufr but you are wrong as he is a kafir for not following what he claims that he believes in! Your friends are also wrong in accusing you of kufr just like that without fulfilling the conditions etc.

.i was having a debate online about Ben abrahamson who allegedly believes in the quran & our Prophet SAW & Allah, but the problem is he still follows the Jewish law. I said to the brother he has a chance of going jannah because he believes in Allah the Quran and our Prophet SAW. Long story short, The brother disagreed & called me a disbeliever. would u agree sheikh I uttered kufr?

Apostasy | June 15, 2015 2:07 pm
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If a person committed an act of kufr, and renews his shahadah and regrets the action and sincerely repents, does he has to preform ghusl?
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Suppose, a scholar is giving a lecture and an individual makes fun of his actions which he does while giving lecture, he does so just to make fun. Will it be major kufr?is it considered to make fun of islam or the person?