رَثِيْيءَةٌ

Sour milk upon which fresh milk is drawn from the udder, so that it becomes thick: (Lh, S, M, K:) or fresh milk poured upon sour, (As, T, M, Mgh,) and then stirred about with a [wooden instrument called] مِجْدَح until it becomes thick: (Lh, M:) or fresh milk upon which sour milk is poured, then left a while, whereupon thin yellow water [or whey] comes forth, and is poured away from it, and then the thick is drunk. (Har p. 451.) One says, الرَّثِيْيءَةُ تَفْثَأُ الغَضَبَ (S, TA) What is termed رثييءة stills, or appeases, anger: (TA:) alluding to [the effect produced by] a small kindness: a saying which originated from a man's being incensed against some persons. and being hungry, and their giving him to drink some رثييءة, whereupon his anger became appeased: (S in article فثأ:) hence it became a proverb. (TA.)