Is the Hadith, "Invoke blessings upon me, for it is a purification for you, and ask Allah for me Al-Wasilah, for it is a rank in the highest part of Paradise that will not be attained except by one man, and I hope that I am he," authentic or weak?

Muslim reported that the Prophet, peace and blessings be upon him, said: "When you hear the Mu'adhdhin, say what he says, then send blessings upon me, for whoever sends blessings upon me once, Allah will send blessings upon him ten times. Then ask Allah for al-Wasila for me, for it is a station in Paradise that is not fitting except for one of Allah's servants, and I hope that I am he. So whoever asks for al-Wasila for me, my intercession becomes due for him." It was also narrated from the Prophet, peace and blessings be upon him, a Hadith: "Send blessings upon me, for it is a purification for you, and ask Allah for al-Wasila for me, for it is a degree in the highest part of Paradise that no one will attain except one man, and I hope that I am he." However, its chain of narration is weak due to the presence of Layth ibn Abi Sulaym, who is weak and has disturbed narrations. The meaning of this Hadith is generally sound, but with this wording and context, its chain of narration is weak.