All his supplication could not wring a farthing from the old skinflint.
Advanced English Dictionary
+noun [U, C] (formal) the act of asking for sth with a very HUMBLE request or prayer: She knelt in supplication. + He listened with scant patience to their supplications.
Random quote: People are so constituted that everybody would rather undertake what they see others do, whether they have an aptitude for it or not.: Johann Wolfgang von Goethe