Imam Jafar Sadiq (a.s.) informed – Do not stop supporting the family of the Prophet (s.a.w.a.) with your wealth, whether you are rich or poor. Give according to your means.

Those of you who want Allah to grant your most important requests should support the family of the Prophet and their Shia with money, even if you need it desperately.
Behaar al-Anwaar v 96 p 216