The Shaykh mentioned the hadith of the man who asked his sons to burn him after his death and scatter his ashes in the air.

The Shaykh : Here it is fitting for me to mention a hadith, which, despite being narrated in the most authentic book after the Book of Allah, namely Sahih al-Bukhari, is rarely heard from a scholar, preacher, or guide, even though it has a very strong connection to a question like this. I mean by this hadith his saying (peace and blessings be upon him): Is this disbelief or not? It is disbelief because he doubted the power of Allah the Mighty and Majestic. The saying of the Exalted applies to him at the end of Surat Ya-Sin: to the end of the verses. This man said: "And if Allah has power over me, He will punish me with a severe punishment. So when I die, take me and burn me in the fire, then make me into two parts: scatter one part in the wind and the other in the sea." Why? Clearly, so that he might be lost from his Lord, he claimed. So they burned him in the fire, and half of his ashes they scattered in the wind and the other in the sea. Then Allah the Mighty and Majestic said to his particles: "Be so-and-so," and he became a sound human being. Then Allah the Mighty and Majestic said: "O My servant, what compelled you to do what you did?" He said: "O my Lord, I feared You." He said: "Go, for I have forgiven you." So we should note that when we want to issue a ruling of disbelief against someone, perhaps he is excused, perhaps he is excused. So we try, before issuing this ruling, to seek an excuse for his disbelief, not to approve his disbelief, but to save ourselves from declaring him a disbeliever. I think there is a big difference between the two matters. You know, if Allah wills, that there is a legal rule: whoever is afflicted with any of these sins should conceal himself. And part of applying this rule is that if a Muslim comes confessing that he committed a hudud offense and wants to purify himself by having the hudud punishment carried out on him, he is instructed not to confess to the hudud, is that not so? If the perpetrator, the one who committed zina or theft, asks for the hudud to be carried out to purify himself, he is instructed not to confess. The greatest example of that is the story of Ma'iz, who came to him with an oath, and he said to him: "O Messenger of Allah, purify me." So he turned his face away from him. He came to him...