مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2890
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Ibn 'Abbas (رضي الله عنه) from the Prophet (ﷺ) that: He told ‘Ali to prepare some water for ghusl for him, then he gave him a cloak and said, "Conceal me, and turn your back to me.”
Musnad Ahmad 2911Its isnad is dateef]