Ramayana
सुग्रीवेण समं त्वस्य अद्वैधं छिद्रवर्जितम् । आबाल्यं सख्यमभवदनिलस्याग्निना यथा ॥ 7-36-40 ॥
Between him and Sugriva there grew up from childhood a friendship without division and free of any flaw, like that of the wind with fire.
english translation