Imam Ali (AS) says:

Be self-sacrificing

“ وَ اصْبِرُوا عَلَى الْإِيثَارِ عَلَى أَنْفُسِكُمْ فِيمَا تُجْمِدُونَ [تُحْمَدُونَ‏] عَنْهُ

And be patient in sacrificing for yourselves in that which you are grateful for; in things that are dear to you (such as food).”

Sometimes a person must give up things that are dear to him or things that he needs and give them to others. Allah says about the Ansar: “And they give preference to themselves, even if they were in dire need of it” [Hashr 3]; They prefer the emigrants over themselves, even though they themselves were in dire need of it.”