The sins that cause the heart to be sealed

Question:
What are the sins that, if a person persists in them, cause his heart to be sealed?

Answer:
In reality, all sins lead to evil. Persisting in sins leads to the heart being sealed, but major sins are more severe. The Prophet (peace and blessings be upon him) said: . So, in reality, all sins lead to evil, even if they are minor. Being lax with minor sins turns them into major sins that lead to evil. And major sins are more severe. So all sins lead to the corruption of hearts and the deviation of hearts if a person persists in them, because they are a danger. For example, a person...
If a spark were to ignite the edge of his garment, and he said, "This is simple," and left it, would it not grow in his garment and reach his body, thereby burning him entirely? But if he had acted quickly to extinguish it, the person would have been safe from it. If one is lax with evil, even if it is small, it grows and grows and grows until it destroys him. So it is with sins: if a person is lax with them, they grow, become large, and increase until they invalidate his religion and corrupt his worldly life and his Hereafter. Yes.