Rashi on I Samuel
The Beis Lechemite. From Beis Lechem. The rule of every noun composed of two words, e.g., Beis Lechem, Beis Shemesh, Beis Eil, Kiryas Arba, if one wishes to add a 'ה' he adds it between the two words, e.g., Kiryas Ha'arba,1 Bereishis 35:27. Beis Ha'Eili,2 I Melachim 16:34. Beis Ha'lachmi.