اَلسَّلَامُ عَلَيْكُمْ دَارَ قَوْمٍ مُؤْمِنِيْنَ، وَإِنَّا إِنْ شَاءَ اللَّهُ بِكُمْ لَاحِقُوْنَ

As-salamu 'alaikum dara qaumin mu’minin, wa inna-insha- allahu bikum la-‘hikun

Peace be upon you, O you who believe. We will meet you, if Allah willing. Abu Hurairah said, "The Messenger of Allah (ﷺ) went to the graveyard and said these words."

Reference: Muslim: 249