Dream Dictionary The Biblical Model

by Vincent Wienand
1. Legalistic believer; Gal. 2:16,

2. Religious tradition; Matt. 15:1-3;

3. Religious adversary; Matt. 16:21;

4. Fellow believer imposing their ways Gal. 2:12

The Complete Guide to Interpreting Your Dreams

by Stearn Robinson - Tom Corbett
The same as for Brother.

Islamic Dream Interpretation

by Ibn Seerin
Having a brother in-law in a dream and particularly for someone who does not have in-laws means strength, peace and tranquility.