Was the Messenger of Allah "Continuously Sad" in Reality?

Peace be upon you and the mercy of Allah. We often hear from preachers advising piety through sadness, as if our religion calls for gloominess. This, my brothers, is one of the forms of inherited traditions that some preachers have passed down, misleading us into believing it is part of the religion when it is not. I have previously addressed similar issues in an article titled (The Phenomenon of Exaggeration in Narratives of Worship and Piety). How often have we heard that the Prophet (peace be upon him) was "continuously sad," which is part of a long hadith narrated by Al-Tabarani and Ibn Abi Hatim in the description of the Prophet (peace be upon him), stating that he (was often silent, always contemplative, continuously sad). Ibn Al-Qayyim said about this hadith in Madarij Al-Salikin: (This is a hadith that is not authentic, and its chain of narrators includes someone unknown. How can (peace be upon him) be continuously sad? Allah has protected him from sadness over the world and its causes, and He has forbidden him from grieving over the disbelievers, and He has forgiven him for his past and future sins. So where does his sadness come from? Rather, he was always smiling, cheerful). Ibn Taymiyyah (may Allah have mercy on him) said in the tenth volume of Fatwa: (As for sadness, neither Allah nor His Messenger commanded it. Rather, they have forbidden it in certain instances, even if it is related to religious matters, such as Allah's saying: {And do not be weak nor be sad, and you are superior if you are believers} and His saying: {And do not grieve over them nor be distressed by what they plot} and His saying: {And say to his companion, Do not be sad, indeed Allah is with us} and His saying: {And do not be saddened by what they say} and His saying: {So that you do not grieve over what has passed you by nor rejoice over what has come to you} and similar verses are many. This is because it brings no benefit nor wards off harm, so there is no benefit in it, and what has no benefit, Allah does not command it. Yes, one does not sin by feeling sad if it is not accompanied by a prohibition, such as grieving over calamities, as the Prophet (peace be upon him and his family) said: {Verily, Allah does not punish for the tears of the eye nor the grief of the heart, but He punishes for this or has mercy, and he pointed with his hand to his tongue}... And sadness may be accompanied by something for which one is rewarded and praised, making it praiseworthy from that perspective, not from the perspective of sadness, such as grieving over a calamity in one's religion and over the calamities of Muslims in general. This person is rewarded for the goodwill and hatred of evil in his heart and its consequences. But if such grief leads to abandoning what is obligatory, such as patience and jihad, and bringing benefit or warding off harm, then it is forbidden. Many Muslims today grieve over the situation of their brothers, but this grief paralyzes their actions, weakens their resolve, and makes them despair of Allah's mercy, tarnishing their good opinion of Him, glorified is He. By Allah, there is no need for such sadness! Let us distinguish what is part of our religion from what has been introduced into it but is not.