Adab of the EARS!

The ear is responsible before Allah for what it hears. The righteous people are those who listen carefully to what is said and follow it.
The ears fast from listening to obscenities, music and lewd material. To the righteous there is an illustrious fast from hearing things that may anger Allah (SWT) both in and outside of Ramadhan.
There are those amongst us, that fill their ears with forbidden sounds and sinful words and forbid their ears from the Noble Quran, the noble, distinct and divine audition. Listening to the Quran bears the fruit of faith, guidance, light and prosperity; filling the heart with wisdom, tranquility, intimacy and contentment. It is a source of protection from dangerous, deviant, and sinful thoughts. So the power of the ears lies in rememberance, beneficial knowledge, good advice, profound manners,and good speech.

Advice from the Qurān and Sunnāh on the fasting of the ears

And follow not (O man i.e., say not, or do not or witness not, etc.) that of which you have no knowledge (e.g. ones saying: “I have seen,” while in fact he has not seen, or “I have heard,” while he has not heard). Verily! The hearing, and the sight, and the heart, of each of those you will be questioned (by Allah).

(Surah Al-Isra: Verse 36)

And surely, We have created many of the jinns and mankind for Hell. They have hearts wherewith they understand not, they have eyes wherewith they see not, and they have ears wherewith they hear not (the truth). They are like cattle, nay even more astray; those! They are the heedless ones.

(Surah Al-Araf: Verse 179)

Or do you think that most of them hear or understand? They are only like cattle; nay, they are even farther astray from the Path. (i.e. even worst than cattle).

(Surah Al-Furqan: Verse 44)

And when they (who call themselves Christians) listen to what has been sent down to the Messenger (Muhammad SAW), you see their eyes overflowing with tears because of the truth they have recognised. They say: “Our Lord! We believe; so write us down among the witnesses. (Surah Al-Maeda: Verse 83)

And whenever there comes down a Soorah (chapter from the Quran), some of them (hypocrites) say: “Which of you has had his faith increased by it?” As for those who believe, it has increased their faith, and they rejoice. But as for those in whose hearts is a disease (of doubt, disbelief and hypocrisy), it will add suspicion and doubt to their suspicion, disbelief and doubt, and they die while they are disbelievers.

(Surah At- Taubah: Verse 124-125)

And those who turn away from Al-Laghw (dirty, false, evil vain talk, falsehood, and all that Allah has forbidden).

(Surah Al- Mu’minoon: Verse 3)

And when they hear AlLaghw (dirty, false, evil vain talk), they withdraw from it and say: “To us our deeds, and to you your deeds. Peace be to you. We seek not the ignorant.”

(Surah Al-Qasas: Verse 55)