It is narrated from Hazrat Uqbah bin Aamir (may Allah be pleased with him) that a man came to the service of the Prophet (peace and blessings be upon him) and said, "My mother has passed away and I want to give some charity on her behalf." The Prophet (peace and blessings be upon him) asked him, "Did she command you to do so?" He replied, "No." The Prophet (peace and blessings be upon him) said, "Then do not do it."
Hadith Referenceمسند احمد / مسند الشاميين / 17356
Hadith Gradingحکم دارالسلام:إسناده ضعيف، ابن لهيعة سيئ الحفظ