Is it acceptable to give used clothes as expiation for breaking a vow (kafaarat yameen)?
Question

                In the case of expiation for breaking a vow, is it acceptable to give one hundred riyals to a charity instead of looking for people and feeding them? Is giving old clothes that a person has and that are surplus to his needs to the charity so that they can give them to the needy acceptable as clothing people for the expiation for breaking a vow?.
Praise be to Allah.Firstly: 
The expiation for breaking 
    a vow is explained in the verse in which Allaah says (interpretation of the 
    meaning): 
“Allaah will not punish 
    you for what is unintentional in your oaths, but He will punish you for your 
    deliberate oaths; for its expiation (a deliberate oath) feed ten Masaakeen 
    (poor persons), on a scale of the average of that with which you feed your 
    own families, or clothe them or manumit a slave. But whosoever cannot afford 
    (that), then he should fast for three days. That is the expiation for the 
    oaths when you have sworn. And protect your oaths (i.e. do not swear much). 
    Thus Allaah makes clear to you His Ayaat (proofs, evidences, verses, 
    lessons, signs, revelations, etc.) that you may be grateful”
[al-Maa'idah 5:89]
It has been discussed in 
    detail in the answer to question no.
    45676. 
It is permissible to 
    delegate someone to feed or clothe poor people, whether that is a charity or 
    an individual whom you know, but you have to make sure that the one whom you 
    delegate will not give it in the form of cash, but will give food to ten 
    poor persons. 
It should be noted that 
    what is required with regard to the expiation for breaking an oath, if it is 
    to be given in the form of food, is to give the average type of food. It 
    does not have to be the best type of food, and it is not permissible to give 
    the least type, rather it should be of average quality, because Allaah says 
    (interpretation of the meaning): “for its expiation (a deliberate oath) 
    feed ten Masaakeen (poor persons), on a scale of the average of that with 
    which you feed your own families” [al-Maa’idah 5:89]. 
In that case, setting it at 
    100 riyals is not accurate, because he may be rich, in which case the 
    average food that he eats will be worth much more than that. Or he may be 
    poor, in which case the average food that he eats will be worth less than 
    that. Each person must give expiation in the form of his own average food, 
    whether he is rich or poor. 
Secondly: 
The kind of clothing that 
    is acceptable for the expiation for breaking an oath is that which is 
    suitable for praying in, such as a thobe or an izaar (lower garment) and 
    rida’ (upper garment). It is not stipulated that it should be new, so it is 
    permissible to give old clothes so long as they have not become worn out and 
    useless. 
Ibn Qudaamah (may Allaah 
    have mercy on him) said: It is permissible to give them old or new clothes, 
    unless they are worn out and useless; that is not acceptable because it is 
    faulty. End quote from al-Mughni (10/9).  
Al-‘Adawi said in his 
    commentary on Sharh al-Risaalah (2/26): Is it essential that the 
    clothes be new or not?  
It seems that this is not 
    essential; rather if they are still in good condition then they are like new 
    clothes. End quote. 
If you gave ten sets of 
    clothing to a charity that would distribute them to the poor, then that is 
    acceptable. 
And Allaah knows best.