Answer
✅ Please pay attention to the following narrations:
1 عَنْ زُرَارَةَ بْنِ أَعْيَنَ أَنَّهُ قَالَ لِأَبِي جَعْفَرٍ الْبَاقِرِ أَخْبِرْنِي عَنْ حَدِّ الْوَجْهِ الَّذِي يَنْبَغِي أَنْ يُوَضَّأَ الَّذِي قَالَ اللَّهُ عَزَّ وَ جَلَّ فَقَالَ الْوَجْهُ الَّذِي قَالَ اللَّهُ وَ أَمَرَ اللَّهُ عَزَّ وَ جَلَّ بِغَسْلِهِ الَّذِي لَا يَنْبَغِي لِأَحَدٍ أَنْ يَزِيدَ عَلَيْهِ وَ لَا يَنْقُصَ مِنْهُ إِنْ زَادَ عَلَيْهِ لَمْ يُؤْجَرْ وَ إِنْ نَقَصَ مِنْهُ أَثِمَ مَا دَارَتْ عَلَيْهِ الْوُسْطَى وَ الْإِبْهَامُ مِنْ قُصَاصِ شَعْرِ الرَّأْسِ إِلَى الذَّقَنِ وَ مَا جَرَتْ عَلَيْهِ الْإِصْبَعَانِ مُسْتَدِيراً فَهُوَ مِنَ الْوَجْهِ وَ مَا سِوَى ذَلِكَ فَلَيْسَ مِنَ الْوَجْهِ
📚 Al-Faqih, Vol. 1, p. 44
Zurarah asked Imam Baqir (peace be upon him): 'Inform me about the limits of the face that Allah has mentioned, which should be washed in Wudu.' The Imam said: 'The face that Allah has mentioned and commanded to be washed, which it is not appropriate for anyone to decrease or add to, and he who adds to it earns no reward, and he who decreases from it has sinned, is the area that the middle finger and the thumb encircle, from the hairline to the chin. And whatever these two fingers encompass and flow over in a circular manner is part of the face, and what is outside of it is not.'
2 زُرَارَةَ قَالَ: قُلْتُ لِأَبِي جَعْفَرٍ أَ لَا تُخْبِرُنِي مِنْ أَيْنَ عَلِمْتَ وَ قُلْتَ أَنَّ الْمَسْحَ بِبَعْضِ الرَّأْسِ وَ بَعْضِ الرِّجْلَيْنِ فَضَحِكَ فَقَالَ يَا زُرَارَةُ قَالَهُ رَسُولُ اللَّهِ وَ نَزَلَ بِهِ الْكِتَابُ مِنَ اللَّهِ عَزَّ وَ جَلَّ لِأَنَّ اللَّهَ عَزَّ وَ جَلَّ قَالَ فَاغْسِلُوا وُجُوهَكُمْ فَعَرَفْنَا أَنَّ الْوَجْهَ كُلَّهُ يَنْبَغِي أَنْ يُغْسَلَ ثُمَّ قَالَ وَ أَيْدِيَكُمْ إِلَى الْمَرافِقِ فَوَصَلَ الْيَدَيْنِ إِلَى الْمِرْفَقَيْنِ بِالْوَجْهِ فَعَرَفْنَا أَنَّهُ يَنْبَغِي لَهُمَا أَنْ يُغْسَلَا إِلَى الْمِرْفَقَيْنِ
📚 Al-Faqih, Vol. 1, p. 103
Zurarah said: 'I said to Imam Baqir (peace be upon him): 'Will you not inform me how you knew that wiping should be on a part of the head and a part of the two feet?' The Imam smiled and said: 'O Zurarah, the Messenger of Allah (peace be upon him and his family) said this, and the Quran was revealed from Allah for it.'
'For Allah Almighty and Glorious says: 'So wash your faces,' and from this verse, we knew that the entire face is appropriate to be washed. Then He says: 'and your hands up to the elbows,' so He connected the hands to the elbows, and we knew that the hands also must be washed (completely) up to the elbows.'
3 عَمَّار قال: سُئِلَ أَبُو عَبْداللَّه عَن الرَّجُل يَنْقَطِعُ ظُفُرُهُ هَلْ يَجُوزُ لَهُ أَنْ يَجْعَلَ عَلَيْهِ عِلْكاً قَالَ لَا و لَا يَجْعَلُ عَلَيْهِ إِلَّا مَا يَقْدِرُ عَلَى أَخْذِهِ عَنْهُ عِنْدَ الْوُضُوءِ وَ لَا يَجْعَلُ عَلَيْهِ مَا لَا يَصِلُ إِلَيْهِ الْمَاءُ
📚 Al-Tahdhib, Vol. 1, p. 425
Ammar said: 'I asked Imam Sadiq (peace be upon him) about a person whose nail is broken, is it permissible to put sap on it?' The Imam said: 'No, and he should not put anything on it except something that he is able to remove at the time of Wudu, and he should not put anything on it that prevents water from reaching his body.'
4 علي بْن جعفر عن أَخيه موسى بن جعفر قال: سَأَلْتُهُ عن الْمَرْأَة عَلَيْهَا السِّوَارُ وَ الدُّمْلُجُ فِي بَعْضِ ذِرَاعِهَا لَا تَدْرِي يَجْرِي الْمَاءُ تَحْتَهُ أَمْ لَا كَيْفَ تَصْنَعُ إِذَا تَوَضَّأَتْ أَوِ اغْتَسَلَتْ قَال تُحَرِّكُهُ حَتَّى يَدْخُلَ الْمَاءُ تَحْتَهُ أَوْ تَنْزِعُهُ وَ عَنِ الْخَاتَمِ الضَّيِّقِ لَا يَدْرِي هَلْ يَجْرِي الْمَاءُ إِذَا تَوَضَّأَ أَمْ لَا كَيْفَ يَصْنَعُ قَالَ إِنْ عَلِمَ أَنَّ الْمَاءَ لَا يَدْخُلُهُ فَلْيُخْرِجْهُ إِذَا تَوَضَّأَ
📚 Al-Kafi, Vol. 3, p. 44
Ali ibn Ja'far said: 'I asked Imam Kadhim (peace be upon him) about a woman who has a bracelet or an armlet on her hand and she does not know whether the water flows beneath it or not. What should she do when she performs Ghusl and Wudu?' The Imam said: 'She should move it so that the water flows beneath it, or she should take it off.'
'And I asked about a tight ring, and she does not know whether water flows beneath it or not, what should she do?' He said: 'If she knows that water will not enter beneath it, she must take it off during Wudu.'
✅ The verses and narrations on Wudu explicitly and generally state that it is necessary to wash the entire face and hands during Wudu, and anything that prevents water from reaching the body, such as decorative nail polish, must be removed. If there is a barrier on the hands or face, the Wudu is considered problematic.