If he gives iftaar to a rich relative, he will have the reward of one who gives iftaar to a fasting person
Question

                I hope that you can tell me whether giving iftaar to a relative of mine who is well off is included in the hadeeth, “Whoever gives iftaar to one who is fasting…”?.
Praise be to Allah.
    This hadeeth was narrated by al-Tirmidhi (807) from Zayd ibn 
    Khaalid al-Juhani who said: The Messenger of Allaah  (peace and 
    blessings of Allaah be upon him) said: “Whoever gives iftaar to one who is 
    fasting will have a reward like his, without that detracting from the reward 
    of the one who fasted.” Classed as saheeh by al-Albaani in Saheeh 
    al-Tirmidhi. 
This hadeeth is general 
    in meaning and applies to all who fast, whether they are rich or poor. It 
    also includes relatives and others. 

    See Fayd al-Qadeer by al-Manaawi, commentary on 
    hadeeth no. 8890. 

    Indeed, giving iftaar to a fasting person who is a relative 
    may bring a greater reward, because by doing so you may earn the reward of 
    giving iftaar to one who is fasting and of upholding the ties of kinship, so 
    long as the one who is not a relative is not a poor person who cannot find 
    any food with which to break his fast, in which case giving him iftaar will 
    bring a greater reward because that will be meeting his needs. 

    By the same token, giving charity to a poor relative brings a 
    greater reward than giving charity to a poor person who is not a relative. 

    Al-Tirmidhi (658) and Ibn Maajah (1844) narrated that Salmaan 
    ibn ‘Aamir al-Dabiy said: The Messenger of Allaah  (peace and blessings 
    of Allaah be upon him) said: “Charity given to a poor person is charity, but 
    charity given to a relative is two things: charity and upholding the ties of 
    kinship.” Classed as saheeh by al-Albaani in Saheeh Ibn Maajah. 

    Al-Haafiz said in Fath al-Baari: 
It is not necessarily 
    the case that a gift given to a relative is better in all situations, 
    because there is the possibility that a poor person may be in desperate need 
    and the other person (the relative) may not need it at all.  

    Conclusion: 

    Giving iftaar to a relative comes under the meaning of the 
    words of the Prophet  (peace and blessings of Allaah be upon him), 
    “Whoever gives iftaar to one who is fasting will have a reward like his,” 
    and giving him iftaar may bring a greater reward than giving iftaar to one 
    who is not a relative, or it may be the opposite, depending of the needs of 
    those concerned and the interests served by giving him iftaar. 

    And Allaah knows best.