It is narrated from Hazrat Jarir (may Allah be pleased with him) that the Holy Prophet (peace and blessings be upon him) said: When the one who collects zakat leaves from you, he should leave pleased with you.
Hadith Referenceمسند احمد / تتمہ مُسْنَدِ الْكُوفِيِّينَ / 19231
Hadith Gradingحکم دارالسلام:حديث صحيح، م: 989، مجالد ضعيف لكنه توبع