Rav Shlomo Zalman Auerbach on how to visit the graves of the righteous

A well-known story involving Rav Shlomo Zalman Auerbach (1910-95) zt"l (May the Memory of the Righteous be a Blessing), which bears repeating and which is relevant to the day.

A student in the Kol Torah Yeshiva in Jerusalem, approached his Rosh
Yeshiva, Rav Shlomo Zalman Auerbach zt”l and asked him the question:
May I leave my Torah studies in the yeshiva to go and pray at the graves
of