The sole duty of the messenger is to deliver the message, and God knows everything you declare and everything you conceal.
ما عَلَى الرَّسولِ إِلَّا البَلٰغُ وَاللَّهُ يَعلَمُ ما تُبدونَ وَما تَكتُمونَ
maa ‘alar Rasooli illal balaagh; wallaahu ya’lamu maa tubdoona wa maa taktumoon