It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them) that a man came to him and said: I proposed marriage to a woman, but she refused to marry me. Another man proposed to her, and she preferred to marry him. I was overcome with jealousy and killed that woman. Is there any repentance for me? He asked: Is your mother alive? The man replied: No. He said: Repent to Allah and seek closeness to Him as much as you are able. Ata bin Yasar says: I went and asked Sayyiduna Abdullah bin Abbas (may Allah be pleased with them): Why did you ask him whether his mother was alive? He replied: I do not know of any deed that brings one closer to Allah than being good to one’s mother.