Anas b. Malik reported that Allah's Apostle (may peace he upon him) forbade dyeing (one's cloth or hair) in saffron. Hammad said that it pertains to men only.
أَنَّ النَّبِيَّ ﷺ نَهَى عَنِ التَّزَعْفُرِ قَالَ قُتَيْبَةُ قَالَ حَمَّادٌ يَعْنِي لِلرِّجَالِ