It is narrated from Ata' bin Yasar (may Allah have mercy on him) that the Messenger of Allah (peace and blessings be upon him) said the takbir in one of the prayers and gestured with his hand: "Stay." Then he (peace and blessings be upon him) returned in a state where there were traces of water on his (peace and blessings be upon him) body.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 4064