I read in post https://eshaykh.com/doctrine/saintbazurg-jinns-coming-upon-individuals/, that it is kufr to say that Jinn brought Iman on Prophet SAW. Please guide me how is it kufr. didn’t they listen to Quran and believe in it? I am so confused
You have misunderstood the question and the answer. The issue Shaykh Gibril answered was “and the family of these Jins go back to Jins that brought Iman on Prophet Muhammad peace be upon him.” (and we seek refuge in Allah from such sayings). The answer is that Jinns did not bring Iman (nor Islam, nor Quran) to Sayyidina Muhammad (s). It was Gibril (as) who brought the Quran, and as for Iman, Sayyidina Muhammad (s) was a believer from the time of his creation in the `alam al-arwah, the World of Souls, being the First Soul, the First Creation and his light is the source of all the believers’ lights and their iman.
As to your understanding of the issue, yes, Jinns did hear the Holy Qur’an from Sayyidina Muhammad (s) and became believers as Allah related in Surat al-Ahqaf, 29-32.
That was definitely not the question posed in this post however.
Allah knows best,