Are there any saheeh ahaadeeth which speak of the ransoming of the living and the dead during Ramadaan?
Question

                I heard from someone that Allaah ransoms just one of the dead Muslims every night, and that He does not ransom any of the living except on the last night of Ramadaan, when He ransoms the same number as the number of dead whom He ransomed during the month. Is this true?.
Praise be to Allah.
      After researching the matter, we did not find any ahaadeeth 
      which say such a thing. 

    There are ahaadeeth which say that Allaah ransoms people from 
    the Fire during Ramadaan, and that happens every night. 

    Some of these ahaadeeth are saheeh (sound), some are da’eef 
    (weak),  and some are mawdoo’ (fabricated). 

    Among the saheeh ahaadeeth which speak of that are the 
    following: 

    1 – It was narrated that Abu Hurayrah (may Allaah be pleased 
    with him) said: The Messenger of Allaah  (peace and blessings of Allaah 
    be upon him) said: “When the first night of Ramadaan comes, the devils and 
    mischievous jinn are chained up, and the gates of Hell are closed, and none 
    of its gates are opened. The gates of Paradise are opened and none of its 
    gates are closed. And a caller cries out: ‘O seeker of good, proceed; O 
    seeker of evil, desist.’ And Allaah has people whom He frees (from the 
    Fire), and that happens every day.” 

    Narrated by al-Tirmidhi, 682; Ibn Maajah, 1642; classed as 
    hasan by Shaykh al-Albaani in Saheeh al-Jaami’, 759. 

    2 – It was narrated that Jaabir (may Allaah be pleased with 
    him) said: The Messenger of Allaah  (peace and blessings of Allaah be 
    upon him) said: “At every breaking of the fast Allaah has people whom He 
    redeems from the Fire, and that happens every night.”

    Narrated by Ahmad, 21698; Ibn Maajah, 1643; classed as saheeh 
    by Shaykh al-Albaani in Saheeh Ibn Maajah. 
The da’eef (weak) and 
    mawdoo’ (fabricated) ahaadeeth that have been narrated on this topic include 
    the following: 
1 – The report narrated 
    from Abu Hurayrah (may Allaah be pleased with him), according to which the 
    Messenger of Allaah  (peace and blessings of Allaah be upon him) said: 
    “When the first night of Ramadaan comes, Allaah looks at His creation, and 
    if Allaah looks at a person He will never punish him. And every day Allaah 
    has one thousand thousand whom He ransoms from the Fire. On the twenty-ninth 
    night Allaah ransoms a number equivalent to the number whom He has already 
    ransomed during the entire month.” 

    This is a mawdoo’ hadeeth. See Da’eef al-Targheeb, 591 
    and al-Silsilah al-Da’eefah, 5468. 
2 – It was narrated from 
    Ibn ‘Abbaas (may Allaah be pleased with him) that he heard the Messenger of 
    Allaah  (peace and blessings of Allaah be upon him) say: “Paradise is 
    scented with incense and adorned throughout the year, in preparation for the 
    beginning of the month of Ramadaan. On the first night of the month of 
    Ramadaan, a wind called al-matheerah comes from beneath the Throne… And on 
    each day of the month of Ramadaan at the time of breaking the fast, Allaah 
    has one thousand thousand whom He ransoms from the Fire, all of whom 
    deserved to go to Hell. And on the last day of the month of Ramadaan, Allaah 
    ransoms on that day a number equivalent to all those whom He ransomed from 
    the beginning of the month to the end. 

    This is a mawdoo’ hadeeth. See Da’eef al-Targheeb, 
    594. 
3 – It was narrated that 
    al-Hasan said: The Messenger of Allaah  (peace and blessings of Allaah 
    be upon him) said: “Every night of Ramadaan Allaah has six hundred thousand 
    whom He ransoms from the Fire. And on the last night Allaah ransoms a number 
    equivalent to those whom He has already ransomed.”  

    This is a da’eef hadeeth. See Da’eef al-Targheeb, 598.