https://torontodawah.com/an-agreement-%d8%a7%d8%aa%d9%81%d8%a7%d9%82-between-the-four-imaams-that-the-rights-of-the-oppressed-one-are-not-forgiven-by-allaah-and-are-never-dropped-except-if-the-oppressed-person-forgives-th/