Giving salaams to the inhabitants of the graves – should this be done by those who pass by or only by those who enter the graveyard?

The dhikr to be recited when seeing graves –is it to be said by those who enter the graveyard or by those who pass by? If the street passes by the wall of the graveyard, is it prescribed to say the dhikr when passing by in the street?

Praise be to Allah, and blessings and peace be upon the Messenger of Allah:

We put this question to Shaykh Muhammad ibn Saalih al-‘Uthaymeen, may Allaah preserve him, who answered as follows:

The fuqaha’ said that it is sunnah for both the one who passes by and the one who enters the graveyard to say salaams to the inhabitants of the graves. Based on that, the one who is passing by should stop, say salaams, then continue on his way. And Allaah knows best.