A dialogue. The Panis ask how Sarama crossed the Rasa; she says she is Indra's messenger come for their treasure. They offer Indra friendship, boast of their weapons and their rock treasury, and at last offer her sisterhood and a share. She answers that she knows no brotherhood or sisterhood and tells them to go. Other hymns tell of Brihaspati and the Angirases opening the cave.
Sarama refuses sisterhood and wealth but asks to drink the hidden cows' milk. Under its influence she tells Indra she has not seen the cows; he strikes her with his foot, she vomits the milk and runs back, and he follows her track and recovers the herd.
What is different here:
She drinks the milk and lies; Indra punishes her and uses her trail.
The gods first send a bird, which takes the Panis' food and hides the truth; Indra wrings its neck. Sarama refuses all food, goes hungry and reports faithfully, and Indra grants that her descendants will be eaters of food.
What is different here:
The bribed one is a bird; Sarama is wholly faithful.
Sources: Hymns of the Rigveda, tr. R. T. H. Griffith (1896), hymns read for the Vedic layer; The Brhad-devata attributed to Saunaka, ed. and tr. A. A. Macdonell (Harvard Oriental Series 6); Rasa in Vedic Literature (Jaiminiya Brahmana 2.440-442, text and translation), T. Yamada