When a companion saw another companion’s wife in a shabby state.

When a companion saw another companion’s wife in a shabby state.
 
Narrated Abu Juhaifa:
The Prophet (peace be upon him) made a bond of brotherhood between Salman and Abu Ad-Darda.’ Salman paid a visit to Abu Ad-Darda’ and found Um Ad-Darda’ dressed in shabby clothes and asked her why she was in that state. She replied, “Your brother Abu Ad-Darda’ is not interested in (the luxuries of) this world.”
 
Then the hadith states
 
Salman told Abu Ad-Darda’, “Your Lord has a right on you, your soul has a right on you, and your family has a right on you; so you should give the rights of all those who has a right on you.” Abu Ad- Darda’ came to the Prophet (peace be upon him) and narrated the whole story. The Prophet (peace be upon him) said, “Salman has spoken the truth.”
[Sahih al-Bukhari 1968]
 
Ibn Hajr al asqalani commented:
وفي هذا الحديث من الفوائد مشروعية المؤاخاة في الله ، وزيارة الإخوان والمبيت عندهم ، وجواز مخاطبة الأجنبية ، والسؤال عما يترتب عليه المصلحة وإن كان في الظاهر لا يتعلق بالسائل ، وفيه النصح للمسلم وتنبيه من أغفل ، وفيه فضل قيام آخر الليل ، وفيه مشروعية تزين المرأة لزوجها ، وثبوت حق المرأة على الزوج في حسن العشرة ، وقد يؤخذ منه ثبوت حقها في الوطء لقوله : ” ولأهلك عليك حقا ” ثم قال : ” وائت أهلك ” وقرره النبي – صلى الله عليه وسلم – على ذلك . وفيه جواز النهي عن المستحبات إذا خشي أن ذلك يفضي إلى السآمة والملل وتفويت الحقوق المطلوبة الواجبة أو المندوبة الراجح فعلها على فعل المستحب المذكور ،
Following are the things which are proven from this hadith:
1. Brotherhood for Allah is proven from this hadith.
2. To visit the brothers.
3. Staying night at his home.
4. To talk with non Mahram (if necessary)
5. To benefit each other.
6. The virtues of Qiyam at the last part of night.
7. That the wife should beautify herself for husband.
8. The rights of a wife over her husband
9. To stop (the brother) from the Mustahab things, if those mustahbaat are the reason of leaving the Rights and obligations. [Fath al Bari under the hadith 1968]