Hadith

The Prophet Muhammad (pbuh) said:

منْ سَعَى لِمَرِيضٍ فِي حَاجَةٍ قَضَاهَا أَوْ لَمْ يَقْضِهَا خَرَجَ مِنْ ذُنُوبِهِ كَيَوْمَ وَلَدَتْهُ أُمُّهُ

Anyone who strives to meet the needs of a patient, whether they’re met or not, will be cleansed of his sins like the day he was born from his mother

Wasa’il al-Shi’ah, v. 2, p 427