of Forewarn
Source: Webster's dictionaryIt so often happened to me that someone who shared my opinion kept the larger share for himself that I am now forewarned and offer people only ideas. Karl Kraus
Forewarned forearmed. Miguel de Cervantes
Forewarned is fore armed. English Proverb
A man forewarned is equal to two. Mexican Proverb
A man forewarned is as good as two. Spanish Proverb
Be forewarned for the onslaught of groans and grumbles around the monotony of keeping accounts and the drudgery of economizing. Source: Internet