Ramayana
नोच्छ्वसत्तदयोध्यायां सुसूक्ष्ममपि दृश्यते । तिर्यग्योनिगताश्चापि सर्वे राममनुव्रताः ॥ 7-109-22 ॥
In Ayodhya no breathing creature, however minute, could be seen remaining; and even those born in the wombs of animals were all devoted to Rama.
english translation