A son is well-off but his father still wants to give zakaat al-fitr on his behalf

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Agreement between two families that each will give its zakat al-fitr to the other
Ruling on one who does not pay zakaat al-fitr although he is able to

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Related Answers:
Is zakat al-fitr waived with the passage of time?
Deputation in Paying Zakatul Fitr (Charity at End of Ramadan)
The Jews have detained their husbands – how should they pay Zakaat al-Fitr?
Agreement between two families that each will give its zakat al-fitr to the other
Ruling on one who does not pay zakaat al-fitr although he is able to

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