Musnad Ahmad 288:7

Husayn ibn Ali al-Ju'fi narrated to us, from Abd al-Rahman ibn Yazid ibn Jabir, from Abu al-Ash'ath al-San'ani, from Aws ibn Abi Aws, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Among the best of your days is Friday. In it, Adam was created, in it he was taken [in death], in it is the blowing [of the Trumpet], and in it is the thunderous blast. So, increase your prayers upon me therein, for your prayers are presented to me." They said: "O Messenger of Allah, how will our prayers be presented to you when you have decayed?"—meaning, when you have decomposed. He said: "Indeed, Allah, the Mighty and Majestic, has forbidden the earth to consume the bodies of the Prophets, may the prayers of Allah be upon them."