In the name of Allah, the Gracious, the Merciful
Al-Mundhiri recorded the following chapter in his book Al-Targhib wal-Tarhib:
الترغيب في الحياء وما جاء في فضله والترهيب من الفحش والبذاء
Inspiring modesty and what has been related of its virtues, and discouraging obscenity and shamelessness.
Source: al-Targhīb wal-Tarhīb 3/397
Ibn Umar reported: The Prophet, peace and blessings be upon him, passed by a man from the Ansar who was admonishing his brother about modesty. The Prophet said:
دَعْهُ فَإِنَّ الْحَيَاءَ مِنَ الإِيمَانِ
Let him be, for modesty is part of faith.
Source: Ṣaḥīḥ al-Bukhārī 24, Grade: Muttafaqun Alayhi
‘Imran ibn Husayn reported: The Prophet, peace and blessings be upon him, said:
الْحَيَاءُ لَا يَأْتِي إِلَّا بِخَيْرٍ
Modesty does not bring anything but goodness.
Source: Ṣaḥīḥ al-Bukhārī 5766, Grade: Muttafaqun Alayhi
In another narration, the Prophet said:
الْحَيَاءُ خَيْرٌ كُلُّهُ
Modesty is all that is good.
Source: Ṣaḥīḥ Muslim 37, Grade: Sahih
Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said:
الْإِيمَانُ بِضْعٌ وَسَبْعُونَ أَوْ بِضْعٌ وَسِتُّونَ شُعْبَةً فَأَفْضَلُهَا قَوْلُ لَا إِلَهَ إِلَّا اللَّهُ وَأَدْنَاهَا إِمَاطَةُ الْأَذَى عَنْ الطَّرِيقِ وَالْحَيَاءُ شُعْبَةٌ مِنْ الْإِيمَانِ
Faith has sixty to seventy branches, the best of which is to declare there is no God but Allah, the least of which is to remove something harmful from the road, and modesty is a branch of faith.
Source: Ṣaḥīḥ al-Bukhārī 9, Grade: Muttafaqun Alayhi
Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said:
الْحَيَاءُ مِنْ الْإِيمَانِ وَالْإِيمَانُ فِي الْجَنَّةِ وَالْبَذَاءُ مِنْ الْجَفَاءِ وَالْجَفَاءُ فِي النَّارِ
Modesty is part of faith and faith is in Paradise. Shamelessness is part of insolence and insolence is in Hellfire.
Source: Sunan al-Tirmidhī 2009, Grade: Sahih
Abu Umamah reported: The Prophet, peace and blessings be upon him, said:
الْحَيَاءُ وَالْعِيُّ شُعْبَتَانِ مِنْ الْإِيمَانِ وَالْبَذَاءُ وَالْبَيَانُ شُعْبَتَانِ مِنْ النِّفَاقِ
Modesty and reticence are two branches of faith. Profanity and temerity are two branches of hypocrisy.
Source: Sunan al-Tirmidhī 2027, Grade: Sahih
Al-Tirmidhi commented on this tradition, saying:
وَالْعِيُّ قِلَّةُ الْكَلَامِ وَالْبَذَاءُ هُوَ الْفُحْشُ فِي الْكَلَامِ وَالْبَيَانُ هُوَ كَثْرَةُ الْكَلَامِ مِثْلُ هَؤُلَاءِ الْخُطَبَاءِ الَّذِينَ يَخْطُبُونَ فَيُوَسِّعُونَ فِي الْكَلَامِ وَيَتَفَصَّحُونَ فِيهِ مِنْ مَدْحِ النَّاسِ فِيمَا لَا يُرْضِي اللَّهَ
Reticence is to speak little. Profanity is to speak obscenely. Temerity is to speak too often, such as those preachers who preach at great length and with eloquence, to be praised by people in what is not pleasing to Allah.
Source: Sunan al-Tirmidhī 2027
Qurrah ibn Iyas reported: We were with the Messenger of Allah, peace and blessings be upon him, when modesty was mentioned to him. They said, “O Messenger of Allah, is modesty part of faith?” The Prophet said:
بَلْ هُوَ الدِّينُ كُلُّهُ
Rather, it is the entire religion.
Then, the Prophet said:
إِنَّ الْحَيَاءَ الْعَفَافُ وَالْعِيَّ عِيُّ اللِّسَانِ لا عِيُّ الْقَلْبِ وَالْعَمَلُ مِنَ الإِيمَانِ وَإِنَّهُنَّ يَزِدْنَ فِي الآخِرَةِ وَيَنْقُصْنَ مِنَ الدُّنْيَا وَمَا يَزِدْنَ فِي الآخِرَةِ أَكْثَرُ مِمَّا يَزِدْنَ فِي الدُّنْيَا
Verily, modesty, abstinence, reticence of the tongue but not the heart, and deeds are all part of faith. They bring gain in the Hereafter and loss in the world: what is gained in the Hereafter is much greater than what is missed in the world.
Source: al-Sunan al-Kubrá 19162, Grade: Sahih
Aisha reported: The Messenger of Allah, peace and blessings be upon him, said:
لَوْ كَانَ الْحَيَاءُ رَجُلا لَكَانَ رَجُلا صَالِحًا وَلَوْ كَانَ الْفُحْشُ رَجُلا لَكَانَ رَجُلَ سَوْءٍ
If modesty were to take the form of a man, he would be a righteous man. If shamelessness were to take the form of a man, he would be a wicked man.
Source: Makārim al-Akhlāq li-Ibn Abī al-Dunyā 85, Grade: Hasan
Ibn Abbas reported: The Messenger of Allah, peace and blessings be upon him, said:
إِنَّ لِكُلِّ دِينٍ خُلُقًا وَإِنَّ خُلُقَ الْإِسْلَامِ الْحَيَاءُ
Verily, every religion has a character and the character of Islam is modesty.
Source: Sunan Ibn Mājah 4182, Grade: Sahih li ghayrihi
Anas ibn Malik reported: The Messenger of Allah, peace and blessings be upon him, said:
مَا كَانَ الْفُحْشُ فِي شَيْءٍ إِلَّا شَانَهُ وَمَا كَانَ الْحَيَاءُ فِي شَيْءٍ إِلَّا زَانَهُ
Obscenity is not found in anything but that it disgraces it, and modesty is not found in anything but that it beautifies it.
Source: Sunan al-Tirmidhī 1974, Grade: Sahih
Ibn Umar reported: The Prophet, peace and blessings be upon him, said:
إِنَّ الْحَيَاءَ وَالإِيمَانَ قُرِنَا جَمِيعًا فَإِذَا رُفِعَ أَحَدُهُمَا رُفِعَ الآخَرُ
Verily, modesty and faith come together. If one of the two is missing, so is the other.
Source: Shu’ab al-Imān 7211, Grade: Sahih
Abdullah ibn Mas’ud reported: The Messenger of Allah, peace and blessings be upon him, said:
اسْتَحْيُوا مِنْ اللَّهِ حَقَّ الْحَيَاءِ
Be modest before Allah, as is his right.
We said, “O Messenger of Allah, surely we have modesty, all praise is due to Allah!” The Prophet said:
لَيْسَ ذَاكَ وَلَكِنَّ الِاسْتِحْيَاءَ مِنْ اللَّهِ حَقَّ الْحَيَاءِ أَنْ تَحْفَظَ الرَّأْسَ وَمَا وَعَى وَالْبَطْنَ وَمَا حَوَى وَلْتَذْكُرْ الْمَوْتَ وَالْبِلَى وَمَنْ أَرَادَ الْآخِرَةَ تَرَكَ زِينَةَ الدُّنْيَا فَمَنْ فَعَلَ ذَلِكَ فَقَدْ اسْتَحْيَا مِنْ اللَّهِ حَقَّ الْحَيَاءِ
It is not so. Rather, modesty before Allah, as is his right, is to guard the mind and what runs through it, to guard the stomach and what fills it, and to reflect upon death and trials. Whoever desires the Hereafter, let him abandon the embellishment of worldly life. Whoever does so has been modest before Allah, as is his right.
Source: Sunan al-Tirmidhī 2458, Grade: Sahih
Success comes from Allah, and Allah knows best.