Sayyiduna Anas bin Malik (may Allah be pleased with him) said: Jibril (peace be upon him) came down to the Prophet (peace and blessings be upon him) and said: "O Muhammad, Mu'awiyah bin Mu'awiyah al-Muzani (may Allah be pleased with him) has died. Would you like to lead his funeral prayer?" He (peace and blessings be upon him) said: "Yes." So Jibril (peace be upon him) struck with his two wings, and no tree and no hillock remained but it was lowered, and his bier was raised up for him (peace and blessings be upon him) until he saw it. Then he (peace and blessings be upon him) led the funeral prayer over him, and behind him (peace and blessings be upon him) were two rows of angels, in each row seventy thousand angels. The Prophet (peace and blessings be upon him) asked Jibril (peace be upon him): "O Jibril, what brought him to this rank with Allah?" He said: "His love of the surah 'Qul huwa Allahu ahad' and his reciting it while walking about, standing, sitting and in every state."
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 17089