"Whoever removes a worldly grief from a believer, Allah will remove from him one of the griefs of the day of resurrection. And whoever alleviates the need of a needy person, Allah will alleviate his needs in this world & the hereafter.
Whoever shields (or hides the misdeeds of) a Muslim, Allah will shield him in this world & the hereafter.
And Allah will aid his slave so long as he aids his brother."
Prophet Muhammad pbuh