'streams of merit'.
It is said that one produces 4 streams of merit by offering the 4 requisites
robes,
alms food,
dwelling,
medicine
to a monk who has reached the condition less deliverance of mind;
further by being filled with
unshakable faith in the Buddha,
his doctrine
and community of disciples,
and by being perfect in morality
(A.IV.51.52).
A.VIII.39 describes 4 further streams of merit.