AlaHadrat Imam Ahmad Rida Khan (Alayhir Rahmah) has stated in Fatawa Radawiyyah, Vol. 10, Page 105-106:
"The wealthy should provide financial help as a gift for Sayyids from their own pure money. If the wealthy do not do so, it is deprivation for them. They should remember the time when there would be no protector except for these Sayyids’ Greatest Ancestor (SallAllahu Alayhi wa Sallam). Will they not like to spend a portion of the wealth which was bestowed upon them as a Sadaqah from the court of the Prophet of Rahmah (SallAllahu Alayhi wa Sallam) and which they will soon leave behind when buried under the ground in their graves empty-handed! If they satisfy the needs of the blessed sons of the Holy Prophet for his pleasure, they can expect to be showered with rewards by the most Generous and Kind Prophet (SallAllahu Alayhi wa Sallam) on the day of dire needs (i.e. the Judgment Day).
Ibn ‘Asakir has reported a hadith narrated by Ameer-al-Mumineen Sayyiduna ‘Ali (Radi Allahu Anhu) that the Beloved and Blessed Prophet (SallAllahu Alayhi wa Sallam) has stated: One who is kind to any of my family members will be given reward for it by me on the Day of Judgment." [Al-Jami’ as-Saghir, Page 533, Hadith 8821]