Narrated Ibn `Abbas:
I stayed overnight in the house of my aunt Maimuna bint Al-Harith (the wife of the Prophet (ﷺ) ) while the Prophet (ﷺ) was there with her during her night turn. The Prophet (ﷺ) offered the `Isha' prayer (in the mosque), returned home and after having prayed four rak`at, he slept. Later on he got up at night and then asked whether the boy (or he used a similar word) had slept? Then he got up for the prayer and I stood up by his left side but he made me stand to his right and offered five rak`at followed by two more rak`at. Then he slept and I heard him snoring and then (after a while) he left for the (Fajr) prayer.
Narrated Abu Huraira:
The Prophet (ﷺ) said, "Faith (Belief) consists of more than sixty branches (i.e. parts). And Haya (This term "Haya" covers a large number of concepts which are to be taken together; amongst them are self respect, modesty, bashfulness, and scruple, etc.) is a part of faith."