I saw the Prophet ﷺ, when he performed ablution, rub between the toes of his feet with his little finger.
حدثنا قتيبة حدثنا ابن لهيعة عن يزيد بن عمرو عن أبي عبد الرحمن الحبلي
رأيت النبي ﷺ إذا توضأ دلك أصابع رجليه بخنصره
[Hasan] Abu Dawud also narrated it in the Book of Tahara, Chapter on the man washing (his feet), Hadith 148, from Qutayba, through him. Ibn Lahia explicitly stated that he heard it directly, and Layth bin Saad and others corroborated him.