The Prophet of Islam (PBUH) said: Allah (SWT) has placed four things (deeds) in four other things (deeds).
1. The blessing of knowledge has been placed in respecting the teacher.
2. Permanence of belief is in revering God.
3. Happiness in this world by being kind to the father and the mother.
4. To be saved from hellfire by neither bothering nor offending other people .
 Ayatollah Mojtahedi Tehrani, Salehin Website, 5/06/2015.
source : Shafaqna