What is the authenticity of the hadith: "Indeed, there is a warmth in the hearts of believers because of the killing of Hussein that never cools down"?

There is no prophetic hadith regarding what the questioner mentioned about the killing of Husayn, may Allah be pleased with him. Most of these narrations are fabricated by liars among the people of innovation. A Muslim must be keen on the soundness of his belief and avoid associating with the people of innovation and their doubts, because the heart can be affected by them. Ibn al-Qayyim likened the heart to a sponge that absorbs doubts and advised making it like a solid glass bottle through which doubts pass over its surface without settling within it.