Zakat ul-Fitra
Question :

For those that have a Sayyida mother, but whose father is not a Sayyid, are they permitted to collect Zakat ul-Fitra?

Answer :

They are not considered as Hashemite, so they are permitted to collect Zakat ul-Fitra from non-Hashemites. The Zakat of non-Hashemites cannot be given to a needy Hashemite.

Non Practicing Needy
Question :

When paying Zakat al-Fitra, is it necessary that the poor Shia recipient offers the five daily prayers? Is it possible to give it to children of a single mother who does not pray?

Answer :

Based on an obligatory precaution one should not pay Zakat al-Fitra to a believer who does not pray. It is permissible to pay it to a child.

How to know if Someone is a Sayyid
Question :

What are the ways to know if someone is a Sayyid? And what are the consequences in the Islamic sharia of being a Sayyid?

Answer :

Sayyids are the descendants of Hashim bin Abd Munaf. Such linage is proven by any of three ways: (i) knowing it, (ii) by the witness of two adil people, or (iii) by it being widely-known that leads to being confident about it.
The religious effects of being a Sayyid are the eligibility to collect the Sayyid’s share from the khums in the case of poverty, and the prohibition to collect the zakat from a non-Sayyid.