In the name of Allah, the Most Gracious, the Most Merciful
Abu Huraira, RadhiAllahu Anhu, reported: The Messenger of Allah, SallAllahu Alayhi Wa Sallam, said:
إِذَا انْتَهَى أَحَدُكُمْ إِلَى الْمَجْلِسِ فَلْيُسَلِّمْ فَإِذَا أَرَادَ أَنْ يَقُومَ فَلْيُسَلِّمْ فَلَيْسَتْ الْأُولَى بِأَحَقَّ مِنْ الْآخِرَةِ
When one of you arrives in a gathering, let him greet them with peace. When he intends to leave, let him leave them with peace. The first greeting is not more worthy than the last.
Source: Sunan Abī Dāwūd 5208, Grade: Sahih
Mu’adh ibn Anas, RadhiAllahu Anhu, reported: The Messenger of Allah, SallAllahu Alayhi Wa Sallam, said:
حَقٌّ عَلَى مَنْ قَامَ عَلَى مَجْلِسٍ أَنْ يُسَلِّمَ عَلَيْهِمْ وَحَقٌّ عَلَى مَنْ قَامَ مِنْ مَجْلِسٍ أَنْ يُسَلِّمَ
It is a duty upon one arriving at a gathering to offer greetings of peace to them. It is a duty upon one leaving a gathering to offer salutations of peace to them.
Source: Musnad Aḥmad 15307, Grade: Sahih li ghayrihi
‘Imran ibn Husayn, RadhiAllahu Anhu, reported: A man came to the Prophet, SallAllahu Alayhi Wa Sallam, and he said, “Peace be upon you.” The Prophet, SallAllahu Alayhi Wa Sallam, said:
عَشْرٌ
Ten good deeds.
Then, another man came to the Prophet and he said, “Peace be upon you and the mercy of Allah.” The Prophet, SallAllahu Alayhi Wa Sallam, said:
عِشْرُونَ
Twenty good deeds.
Then, another man came to the Prophet, SallAllahu Alayhi Wa Sallam, and he said, “Peace be upon you and the mercy of Allah and his blessings.” The Prophet, SallAllahu Alayhi Wa Sallam, said:
ثَلَاثُونَ
Thirty good deeds.
Source: Sunan al-Tirmidhī 2689, Grade: Sahih
Sahl ibn Hunayf, RadhiAllahu Anhu, reported: The Messenger of Allah, SallAllahu Alayhi Wa Sallam, said:
مَنْ قَالَ السَّلَامُ عَلَيْكُمْ كُتِبَ لَهُ عَشْرُ حَسَنَاتٍ وَمَنْ قَالَ السَّلَامُ عَلَيْكُمْ وَرَحْمَةُ اللَّهِ كُتِبَ لَهُ عِشْرُونَ حَسَنَةً وَمَنْ قَالَ السَّلَامُ عَلَيْكُمْ وَرَحْمَةُ اللَّهِ وَبَرَكَاتُهُ كُتِبَ لَهُ ثَلَاثُونَ حَسَنَةً
Whoever greets with peace, ten goods are recorded for him. Whoever greets with peace and the mercy of Allah, twenty good deeds are recorded for him. Whoever greets with peace, the mercy of Allah, and his blessings, thirty good deeds are recorded for him.
Source: al-Mu’jam al-Kabīr 5563, Grade: Sahih li ghayrihi
Abu Huraira, RadhiAllahu Anhu, reported: A man passed by the Messenger of Allah, SallAllahu Alayhi Wa Sallam, while he was sitting in a gathering. The man said, “Peace be upon you.” The Prophet, SallAllahu Alayhi Wa Sallam, said:
عَشْرُ حَسَنَاتٍ
Ten good deeds.
Another man passed by and he said, “Peace be upon you and the mercy of Allah.” The Prophet, SallAllahu Alayhi Wa Sallam, said:
عِشْرُونَ حَسَنَةً
Twenty good deeds.
Another man passed by and he said, “Peace be upon you, the mercy of Allah, and his blessings.” The Prophet, SallAllahu Alayhi Wa Sallam, said:
ثَلاثُونَ حَسَنَةً
Thirty good deeds.
A man stood up to leave the gathering and he did not offer salutations of peace. The Prophet, SallAllahu Alayhi Wa Sallam, said:
مَا أَوْشَكَ مَا نَسِيَ صَاحِبُكُمْ إِذَا جَاءَ أَحَدُكُمُ الْمَجْلِسَ فَلْيُسَلِّمْ فَإِنْ بَدَا لَهُ أَنْ يَجْلِسَ فَلْيَجْلِسْ وَإِذَا قَامَ فَلْيُسَلِّمْ مَا الأُولَى بِأَحَقَّ مِنَ الآخِرَةِ
How quickly your companion forgets! If one of you comes to a gathering, let him greet them with peace. If there is room for him to sit, let him sit. If he stands to leave, let him offer salutations of peace. The former duty is no different than the latter.
Source: al-Adab al-Mufrad 980, Grade: Sahih
Abu Huraira, RadhiAllahu Anhu, reported: The Messenger of Allah, SallAllahu Alayhi Wa Sallam, said:
إِنَّ أَعْجَزَ النَّاسِ مَنْ عَجَزَ فِي الدُّعَاءِ وَإِنَّ أَبْخَلَ النَّاسِ مَنْ بَخِلَ بِالسَّلامِ
Verily, the most helpless of people are those unable to supplicate. The most miserly of people are those who are miserly with the greeting of peace.
Grade: Shu’ab al-Imān 8238, Grade: Sahih
Abdullah ibn Mughafal, RadhiAllahu Anhu, reported: The Messenger of Allah, SallAllahu Alayhi Wa Sallam, said:
إِنَّ أَسْرَقَ النَّاسِ مَنْ سَرَقَ صَلاتَهُ
Verily, the worst thieves among people are those who steal from their prayers.
It was said, “O Messenger of Allah, how do they steal from their prayers?” The Prophet, SallAllahu Alayhi Wa Sallam, said:
لا يُتِمُّ رُكُوعَهَا وَلا سُجُودَهَا وَأَبْخَلُ النَّاسِ مَنْ بَخِلَ بِالسَّلامِ
They do not complete its bowing or its prostration. The most miserly of people are those who are miserly with the greeting of peace.
Source: al-Muʻjam al-Awsaṭ 3503, Grade: Sahih
Jabir, RadhiAllahu Anhu, reported: A man came to the Prophet, SallAllahu Alayhi Wa Sallam, and he said, “Indeed, I share the wall of a cloister with someone who bothers me and makes things difficult for me.” The Prophet, SallAllahu Alayhi Wa Sallam, sent for the man and he said:
بِعْنِي عَذْقَكَ الَّذِي فِي حَائِطِ فُلَانٍ
Sell me your cloister that is on the wall of your neighbor.
The man said no. The Prophet, SallAllahu Alayhi Wa Sallam, said:
فَهَبْهُ لِي
Then give it to me.
The man said no. The Prophet, SallAllahu Alayhi Wa Sallam, said:
فَبِعْنِيهِ بِعَذْقٍ فِي الْجَنَّةِ
Then buy it from me for a cloister in Paradise.
The men said no. The Prophet, SallAllahu Alayhi Wa Sallam, said:
مَا رَأَيْتُ الَّذِي هُوَ أَبْخَلُ مِنْكَ إِلَّا الَّذِي يَبْخَلُ بِالسَّلَامِ
I have not seen anyone more miserly than you, except for those who are miserly with the greeting of peace.
Source: Musnad Aḥmad 14223, Grade: Hasan
Mu’awiyah, RadhiAllahu Anhu, reported: The Messenger of Allah, SallAllahu Alayhi Wa Sallam, said:
مَنْ سَرَّهُ أَنْ يَتَمَثَّلَ لَهُ الرِّجَالُ قِيَامًا فَلْيَتَبَوَّأْ مَقْعَدَهُ مِنْ النَّارِ
Whoever is pleased to be received by men standing, let him take his seat in the Hellfire.
Source: Sunan al-Tirmidhī 2755, Grade: Sahih
Success comes from Allah, and Allah knows best.