Man Lā Yaḥḍuruh al-Faqīh
Hadith 15874785 - وَ سَأَلَ عَمَّارٌ اَلسَّابَاطِيُّ أَبَا عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ : عَنِ اَلْمَرْأَةِ يَمُوتُ عَنْهَا زَوْجُهَا هَلْ يَحِلُّ لَهَا أَنْ تَخْرُجَ مِنْ مَنْزِلِهَا فِي عِدَّتِهَا قَالَ "نَعَمْ تَخْتَضِبُ وَ تَدَّهِنُ وَ تَكْتَحِلُ وَ تَمْتَشِطُ وَ تَصْبَغُ وَ تَلْبَسُ اَلْمُصَبَّغَ وَ تَصْنَعُ مَا شَاءَتْ بِغَيْرِ زِينَةٍ لِزَوْجٍ".
Hadith.4785 - Ammar al-Sabati asked Abu Abdullah (as) about a woman whose husband has passed away. He inquired whether it is permissible for her to leave her house during her waiting period (iddah).
The Imam (as) replied: "Yes, she may apply henna, use oils, apply kohl, comb her hair, dye it, wear colored clothing, and do whatever she wishes as long as it is not for adornment intended for a husband."