Friends:

What are the Five Mental Abilities making Safe?

The Blessed Buddha once said:
Bhikkhus, there are these five abilities. What five?

The ability of Faith (saddhā)
The ability of Energy (viriya)
The ability of Awareness (sati)
The ability of Concentration (samādhi)
The ability of Understanding (pañña)

When, Bhikkhus, a Noble Disciple understands as they really
are the gratification, the danger, and the escape regarding
these five abilities, then he is called a Noble Disciple, who is a
stream-enterer, no longer bound to the lower worlds, fixed in
destiny, with enlightenment as his assured future destination!

On The Five Mental Abilities (indriya) see:
http://What-Buddha-Said.net/drops/III/Final_Abilities.htm
http://What-Buddha-Said.net/drops/II/Origin_of_Abilities.htm
http://What-Buddha-Said.net/drops/III/Finding_the_Abilities.htm
http://What-Buddha-Said.net/drops/III/Five_Abilities_Summary.htm
http://What-Buddha-Said.net/drops/III/Fruits_of_the_Abilities.htm
http://What-Buddha-Said.net/drops/III/Analysis_of_the_Abilities.htm

Source of reference (edited extract):
The Grouped Sayings of the Buddha. Samyutta Nikāya.
Book [V: 193] 48 The Mental Abilities: 2 Stream-Enterer..

The 5 Abilities!