Reference for Berakhot 113:12

הנכנס לכרך נעשו לו חפציו שנאמר (תהלים קז, ל) וינחם אל מחוז חפצם המגלח ראשו בחלום סימן יפה לו ראשו וזקנו לו ולכל משפחתו

[Who dreams] that he entered a town, his desires will be fulfilled for him ; as it is said, "And He led them unto their desired haven" (Ps. cvii. 30). Who dreams of shaving his head, it is a good omen for him; [of shaving] his head and beard, [it is a good omen] for him and all his family.

Jastrow