It is narrated from Sayyiduna Ibn Amr, may Allah be pleased with him, that the Noble Prophet, peace and blessings be upon him, said: "When he saw clothes dyed with safflower on my body, he said: 'This is the dress of the disbelievers, take it off.'"
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 6536