Kautilya's Arthashastra 2.36.6

2.36.6

kāruśilpinaḥ svakarmasthāneṣu svajanaṃ vāsayeyuḥ, vaidehakāś cānyonyaṃ svakarmasthāneṣu //

Artisans and other handicraftsmen may, on their own responsibility, allow others of their own profession to reside where they carry on their own work (i.e., in their own houses).

Similarly merchants may on their own responsibility allow other merchants to reside where they themselves carry on their mercantile work (i.e., their own houses or shops).