Siman 137

(9.) On his journey there — immediately when he sailed from Odessa on the Black Sea — there was a great commotion and storm wind. Then a dead person came to him who had recently passed away. And Rabbainu o.b.m. asked the man who was with him: "Did you see the young man of Volchaivetz etc. who was here?" But now this event is no longer novel at all — for afterwards he occupied himself very much with this matter of rectifying the souls of the dead, thousands and tens of thousands. And this was the main purpose of his passing — as is explained in its place [below #191]. See there.