Hadith

Hazrat Fatima al-Zahra (SA)

منْ أَصْعَدَ إِلَى اَللَّهِ خَالِصَ عِبَادَتِهِ أَهْبَطَ اَللَّهُ أَفْضَلَ مَصْلَحَتِهِ
he one who sends up to Allah his pure and sincere worship, Allah, Mighty and Exalted, sends down for him that which will be of most benefit to him

Tanbih al-Khawatir, v. 2, p. 108