Reciting Surah al-‘Asr Before Leaving a Gathering
Question

                Did the Sahaba (Prophet Muhammad’s companions) read the famous du’a (supplication) known as (supplication for leaving a gathering) as well as Surah al-‘Asr?

I have searched but I did not find any hadeeth that the Prophet (peace and blessings of Alah be upon him) used to recite Surah al-‘Asr before leaving a gathering. Is it an innovation?
Praise be to Allah.
    Firstly: 

    Abu Dawood (4859) narrated that 
    Abu Barzah al-Aslami (may Allah be pleased with him) said: The Messenger of 
    Allah (peace and blessings of Allah be upon him) used to say, when he wanted 
    to leave a gathering: “Glory and praise be to You, O Allah, there is no god 
    but You, I seek Your forgiveness and I repent to You.” A man said: O 
    Messenger of Allah, you are saying something that you did not say before. He 
    said: “It is expiation for anything that happened in the gathering.”

    It was classed as saheeh 
    (authentic) by al-Albani in Saheeh Abi Dawood. 

    The knowledge and virtue of the 
    Sahabah (may Allah be pleased with them) and the fact that they so closely 
    followed the Prophet (peace and blessings of Allah be upon him) indicate 
    that whoever among them knew this hadeeth (narration) acted upon it, and we 
    do not need to prove that from each one of them. Rather the basic principle 
    concerning them is that they acted upon the hadeeth and followed the Prophet 
    (peace and blessings of Allah be upon him). 

    Secondly: 

    With regard to reciting Surah 
    al-‘Asr before leaving a gathering, there is a report which indicates that 
    this was the practice of the Sahabah (may Allah be pleased with them). 

    It was narrated that Abu 
    Madeenah al-Darimi said: When two men among the companions of the Prophet 
    (peace and blessings of Allah be upon him) met, they did not part until one 
    of them recited to the other: 1. “By al‑‘Asr (the time). 2. Verily, man 
    is in loss” [i.e., Surah al-‘Asr], then one would say salam to (greet) 
    the other. Narrated by Abu Dawood (no. 417); al-Tabarani in al-Mu’jam al-Awsat 
    (5/215); al-Bayhaqi in Shu’ab al-Eeman (6/501), via Hammad ibn 
    Salamah, from Thabit al-Banani, from Abu Madeenah al-Darimi. Classed as 
    saheeh by al-Albani in al-Silsilah al-Saheehah (2648). He commented 
    on it by saying: 

    From this hadeeth we learn two 
    things that were among the actions of all the righteous predecessors (may 
    Allah be pleased with them all): 

    The first is to say salam when 
    parting; 

    Another thing we learn is that 
    the Sahabah (may Allah be pleased with them) adhered to this practise, 
    namely reciting Surah al-‘Asr, because they are the least likely of any 
    people to introduce into the religion an act of worship by means of which 
    they seek to draw close to Allah, except on the basis of what they learned 
    from the Messenger of Allah (peace and blessings of Allah be upon him) in 
    word or in deed or by his approval. How could it be otherwise, when Allah, 
    may He be blessed and exalted, praised them in the highest terms, saying 
    (interpretation of the meaning): “And the foremost to embrace Islam of 
    the Muhajiroon and the Ansar and also those who followed them exactly (in 
    Faith). Allah is well-pleased with them as they are well-pleased with Him. 
    He has prepared for them Gardens under which rivers flow (Paradise), to 
    dwell therein forever. That is the supreme success” [al-Tawbah 9:100]?

    End quote. 

    And Allah knows best.