Shaykh Ubayd حفظه الله said, “Blowing one’s nose three times after sleeping as commanded by the Prophet, this is done even if a person sleeps in day time.”
[Taken from the lessons on “Conditions, Pillars and Obligation of Salah – Shaykh ul Islaam Muhammad bin Abdil Wahhab رحمه الله Explanation by Shaykh Abdul Muhsin al-Abbaad حفظه الله Taught by: Abdulilah Lahmami]