Sayyiduna Abu Amir al-Sakuni (may Allah be pleased with him) said: I said: O Messenger of Allah, what is the completion of righteousness? He (peace and blessings be upon him) said: "That you do in secret the same deeds you do openly."
Hadith Referenceالمعجم الكبير للطبراني / مسند من يعرف بالكنى / 19003