Siṅgālasutta

Suttapiṭaka · Dīghanikāya · Pāthikavagga · Vol. 11 · Section 193

[193] Householder's son, a helpful friend should be known as a good-hearted friend (suhada) on four grounds: he guards you when you are negligent; he guards your property when you are negligent; he is a refuge for you when you are afraid; and when tasks and duties arise, he provides you with twice the wealth needed. Householder's son, on these four grounds a helpful friend should be known as a good-hearted friend.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.