Mus'ab bin Sa'd narrates: Abdullah bin Umar (may Allah be pleased with them) came to visit Ibn 'Amir (may Allah be pleased with him) when he was ill. He (Ibn 'Amir) said: O Ibn Umar! Will you not pray for me? So Abdullah bin Umar (may Allah be pleased with them) said: I heard the Prophet (peace and blessings be upon him) say: "Allah does not accept prayer without ablution, nor does He accept charity given from unlawful wealth, and you have been the governor of Basra (from where you had income)."
Hadith Referenceصحیح ابن حبان / كتاب الزكاة / 3366
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح: م.فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده حسن على شرط مسلم