Contradiction with Proverbs 21:13
This verse states that ignoring the cry of the poor will result in not being heard when in need, in contrast to Isaiah 58:10, which encourages helping the afflicted as a positive action leading to blessings.
Proverbs 21:13: Whoso stoppeth his ears at the cry of the poor, he also shall cry himself, but shall not be heard.
Contradiction with Proverbs 28:27
This verse suggests giving to the poor leads to blessings, while withholding leads to curses, which complements rather than contradicts Isaiah 58:10's encouragement of generosity.
Proverbs 28:27: He that giveth unto the poor shall not lack: but he that hideth his eyes shall have many a curse.