The Messenger of Allah ﷺ spat into his garment and rubbed it together.
حدثنا موسى بن إسمعيل حدثنا حماد أخبرنا ثابت البناني
بزق رسول الله ﷺ في ثوبه وحك بعضه ببعض
No references are available.
[Sahih] The hadith is mursal, but it has another connected route in Ahmad 3/43, and its chain is sahih. Hammad is Ibn Salama.