ariya-vaṃsa
ariya-vaṃsa:The four 'noble usage's',are:contentedness (of the monk) with any robe,contentedness with any alms-food,contentedness with any dwelling,and delight in meditation and detachment.In the Ariya-vaṃsa Sutta,(A.IV ,28) and similarly in D.33,it is said:
"Now the monk is contented with any robe,with any alms-food,with any dwelling,finds pleasure and enjoyment in mental training and detachment .But neither is he haughty on that account,nor does he look down upon others.Now,of a monk who herein is fit and indefatigable,who remains clearly conscious and mindful,of such a monk it is said that he is firmly established in the ancient,noble usage's known as the most lofty ones."
Full tr.of Ariya-vaṃsa Sutta in WHEEL 83/84.