"A man would worship Allah for 20 years"

Ubayd Allaah ibn Abdullaah said:

إن كان الرجل ليتعبد عشرين سنة ما يعلم به جاره

ENGLISH:

"A man would worship Allah for twenty years without his neighbour knowing about it".

NEDERLANDS:

“Een man zou twintig jaar Allah aanbidden, zonder dat zijn buurman  daarvan afwist!”