Fingernail Proverbs

Who ha' fingernail no ha' itch, and who ha' itch no ha' fingernail. (Jamaican Proverb)
A patient dually determined can fill a pot with water using a fingernail. View proverb
African Proverb
Give [him] a fingernail, [he] will ask for the forearm. View proverb
Russian Proverb